MSD 2957 Installation

Page 1

Atomic LS Master Truck EFI Kits

DANGER

PN 2957 - 3-Bolt Manifold PN 2958 - 4-Bolt Manifold

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Thank you for selecting the Atomic LS Truck EFI System! MSD’s Atomic EFI systems are designed with two major goals; to simplify installation of EFI and deliver better overall performance from your engine. Simplicity is achieved through wired-less technology to ease installation plus the Atomic is simple to program with no PC required! Performance is delivered through advanced control of the fuel and ignition, just as you’d expect from MSD.

Parts Included:

2 - Fuel Rail Assemblies 1 - Power Module 1 - Handheld Monitor 1 - Wideband O2 Sensor 1 - Weld - in O2 Sensor Bung, Plug, and Crush Washer 1 - CAN Cable 1 - Power Module Main Harness 1 - Power Harness 1 - Cam Sensor Harnesses 4x (PN 2958) 2 - Cam Sensor Harnesses 1x & 4x (PN 2957) 1 - Crank Sensor Harnesses 58x (PN 2958) 2 - Crank Sensor Harnesses 24x & 58x (PN 2957) 1 - MAP Sensor Harnesses (PN 2957) 2 - MAP Sensor Harnesses (PN 2958) 1 - TPS Harness 1 - VVT Harness (PN 2958) 4 - Delphi Injector Harnesses (PN 2957) 4 - EV6 Injector Harnesses (PN 2958) 1 - IAT Sensor and Grommet 1 - 4GB Micro SD Card 4 - Grommets, Sleeves, and Mounting Screws

4 - Fuel Rail Brackets 8 - Injector Retainer Clips 8 - Short Spacers, Black (PN 2957) 8 - Long Spacers, Black (PN 2958) 4 - 6mm x 16mm HEX Head Bolts 8 - 6mm x 12mm Bolts 4 - 6/32” Socket Head Cap Screws 8 - 8/32” Socket Head Cap Screws 8 - M6 x 90mm Intake Bolts (PN 2957) 8 - M6 x 100mm Intake Bolts (PN 2958) 8 - #12 Washers 2 - 90º - 6AN Fittings 1 - 18” High Pressure Fuel Hose 2 - Fuel Rail End Caps

Parts Required, Not Included:

Fuel System: Fuel Pump, Fuel Filter,

Injectors, Injector O-Rings, Regulator, and Fuel Line. Thread sealer for intake bolts.

Not legal for use on pollution controlled vehicles: The MSD Atomic EFI system is not CARB approved for use on emission controlled vehicles.

modiﬁcations must be carried out by a qualiﬁed automotive technician. Installation of fuel system parts requires handling of gasoline. Ensure that work is performed in a well ventilated area with an approved ﬁre extinguisher nearby. Extinguish all open ﬂames, prohibit smoking and eliminate all sources of ignition in the area of the vehicle before beginning the installation. When working with fuel systems, eye goggles and other safety apparel should be worn to protect against debris and sprayed gasoline. The ﬁnished work must be thoroughly checked to ensure there are no fuel leaks.

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WARNING

Installation of this product requires detailed knowledge of automotive systems and repair procedures. Installation of fuel system parts and any fuel tank

Page 2

2 INSTALLATION INSTRUCTIONS

FGH

DLPHI

CAPABILITIES

The Atomic LS Truck kit is designed to ﬁt the original equipment (OE) 3-bolt and 4-bolt throttle body truck intakes. The Atomic LS Truck is a self integrated Fuel and Ignition controller for GEN-III and GEN-IV motors that requires no programming with a PC. The interface is controlled through a supplied hand held controller. The ECU only needs basic conﬁguration information. Once the engine warms up to operating temperature, the ECU tunes itself using a basic conﬁguration to ensure the best performance and throttle response for your engine. The atomic will adjust timing and fuel curves on the ﬂy which in turn produces the smoothest idle, best fuel economy, and superior wide open throttle performance at all times. This also means that weather and altitude changes aren’t a problem with this system. The Atomic LS Truck kit supports the factory Variable Valve Timing (VVT) conﬁguration as well. The Atomic LS Truck kit uses all OE sensors with the exception of the wideband O2 sensor. The Atomic LS Truck system only supports a cable driven throttle body at this time.

Note: The 4-bolt electronic control throttle body will have to be converted to a cable drive throttle

body like the MSD PN 2940.

COMPONENTS

Power Module: The Power Module of the Atomic LS is the communication

hub of the system and provides the high current fuel pump circuit and other input/outputs for optional features. The unit has two ports for the MSD CAN system as well as a wiring harness. There are connections for the WB02, the Handheld Monitor as well as Rail Power and CAN communication to the integrated fuel rails.

Handheld Programmer: The Atomic LS Truck kit is a self-tuning fuel and

ignition control system. The system only needs the basic engine conﬁguration information to build a fuel table for the engine. The Handheld Programmer is used to enter all the engine parameters into the ECU, and uses the MSD CAN to communicate with the ECU. Once the engine has been started and warmed up to operating temperature, the ECU will monitor the sensors. The ECU will then adjust the fuel tables and ignition in order to maintain a properly running engine.

Fuel Rails/ECU: The Fuel Rails/ECU is combination of the electronics that drive

an ECU and a fuel rail assembly built into one unit. All of the engine sensor connectors (except for the wideband O2 which connects to the Power Module directly) are found on the fuel rails. The fuel rails are equipped with -6AN ﬁttings, but will accept -8AN ﬁttings (the internal rail oriﬁce is the same diameter as the -8AN).

Drivers Side Fuel Rail Passenger Side Fuel Rail

EFG

Power

Module

Handheld

Programmer

DLPHI

FGH

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Page 3

INSTALLATION INSTRUCTIONS 3

PREPARING THE INTAKE MANIFOLD FOR INSTALLATION OF THE ATOMIC LS FUEL RAILS

The intake manifold must be modiﬁed in order to install the Atomic LS fuel rails. Removal of the intake manifold for modiﬁcation and installation of the fuel rails is recommended but not required. If care is taken while the intake is removed from the motor, the intake gaskets can be reused.

•Cutthemountingbossesthatholdthefactoryfuelrailsoff.(Figure

1a and Figure 1b).

•Usingadriftpinoracenterpunch,knockthefactoryboltsout

of the centering bushing used to align the intake on eight of the ten intake bolts/bushings (Figure 2). Take care not to damage the centering bushings as they will be reused with the new intake bolts.

Note: If the manifold is modiﬁed on the motor, plug the injector

bosses to prevent debris falling into the motor.

Figure 1a

FUEL RAIL INSTALLATION (3 AND 4-BOLT THROTTLE BODY INTAKE MANIFOLD)

1. Preassemble the rail brackets with the spacers and centering bushing. Coat the ends of the bolts with thread sealant.

2. The angled end of the bracket is always facing to the left when installed correctly on either side of the engine (Figure 3).

NOTE: The spacers for the 4-bolt intakes are slightly longer

than the 3-bolt spacers.

4-BOLT

SPACER

ANGLED END

Figure 1b

Figure 2

Figure 3 3-Bolt and 4-Bolt

Intake Conﬁguration.

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Page 4

4 INSTALLATION INSTRUCTIONS

FRONT

1ST PASS: 42 IN LB - 44 IN LB 2ND PASS: 87 IN LB - 89 IN L2

Figure 4 Intake Manifold Torque Speciﬁcations.

3. One of the fuel rails is shorter than the other. The shorter rail is installed on the driver side of the engine (Figure

5).

4. Lubricate the o-rings on the injectors with some motor oil or silicone lubricant. Install the clips onto the injector before they are pushed into the fuel rail bung. The injector clip will automatically secure the injector to the rail.

5. Push the fuel injectors into the bung without forcing them on. The injectors should slide in easily (Figure 6).

6. Plug the fuel injector pigtails into the fuel rail connections (Figure 7).

7. Connect the fuel injector pigtails into the injectors. The long wires connect to the injectors on each end of the fuel rail. The short wires connect to two inner injectors (Figure 8).

8. Plug the FPS (fuel pressure sensor) connector into the fuel pressure sensor under the fuel rail (Figure 9).

9. Connect the CAN cable from one rail to the other (Figure 10).

10. Connect the heavy red Rail Power wire together between the two rails (Figure 11).

11.Repeat steps 3-6 for the passenger side fuel rail assembly.

NOTE: The Driver Side Rail is SHORTER than the Passenger Side Raile.

PASSENGER SIDE

DRIVER SIDE

Figure 5 Fuel Rail Length.

Figure 6 Injector Clips.

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Page 5

INSTALLATION INSTRUCTIONS 5

Figure 8 Injector Pigtail.

Figure 7 Injector Rail

Connection.

Figure 9 Fuel Pressure Sensor.

Figure 10 CAN Cable.

12. Place the spacer/bushing/rail bracket assemblies onto the intake manifold.

13. Use the torque sequence on page 4, Figure 4 to torque the manifold bolts down correctly. Bolts #9 and #10 will use the stock length bolts/bushings.

14. Check the rail brackets with a straight edge (Figure 12).

15. Install the rails onto the manifold. Use the supplied 6mm bolts to secure the rails to the rail brackets. Torque to 85 in lb – 87 in. lb. (Figure 13).

16. STOP. Visually inspect and ensure all the injectors are sitting evenly and the injector o-rings are not pinched or visible. Failure to install the injectors correctly can result in fuel leaks and engine ﬁre.

17. Begin routing the sensor harnesses and plugging them into the appropriate sensors.

18.

Line the end of the fuel rail cover up with the edge of the black mold on the rear of the fuel rail (Figure 14). Slide the cover towards the rear of the engine to engage the locking tabs on the fuel rail. (Figure 15).

Figure 11 Rail Power.

Figure 12 Straight Edge Check of

Brackets.

END OF COVER / EDGE OF BLACK MOLD.

Figure 13 Rail to Bracket Bolts.

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Figure 14 Fuel Rail Cover.

Page 6

6 INSTALLATION INSTRUCTIONS

COVER - TOP VIEW

END CAP

8/32 SCREWS ON BACK OF COVER

6/32

SCREWS

6/32

SCREWS

19. Secure the rail covers onto the fuel rail with the supplied 8/32 socket head cap screws (Figure 15).

20. Install the fuel rail end cap onto the cover and secure it with the supplied 6/32 socket head cap screws.

FUEL RAIL COVER INSTALLATION

Figure 15 Fuel Rail Cover.

OVERVIEW

Follow these steps to install both covers. To remove the covers reverse the steps.

END CAP

6/32

SCREWS

1. Line the end of the fuel rail cover up with the edge of the black mold on the rear of the fuel rail (Figure 14).

2. Slide the cover towards the rear of the engine to engage the locking tabs on the fuel rail.

3. Install the 8/32 screws that secure the covers to the fuel rails.

4. Install the end caps and secure with the 6/32 screws.

SLIDE TOWARD REAR TO ENGAGE.

FRONT REAR

COVER - TOP VIEW

END CAP

6/32

SCREWS

8/32 SCREWS ON BACK OF COVER

LOCKING TABS

EDGE OF

BLACK MOLD

FUEL RAIL/ECU WIRING

The Atomic LS Truck kit has several adapter harnesses in order for the kit to install with all the different variations of the truck motors. These adapter harnesses plug into the connectors found on the rails themselves. The IAC and TPS connectors are on both rails to accommodate the different throttle body conﬁgurations. Air Conditioning kick up (AC): When 12v is applied to this wire, the ECU will kick up the IAC count and

Fan #1 to compensate for the engine load change created by the air conditioning compressor.

Alternator: The kit is supplied with a harness that has two alternator connectors on one end. This is

done to accommodate the two different alternator ends used by GM. Identify which connector is needed, and cut the other connector off. Use the heatshrink caps provided in the parts bag to seal the wire end.

Cam Sensor: The kit supports both the 1x and 4x cam sensors. The easiest way to identify the cam

sensor on a stock engine would be by locating the sensor on the motor. The 4x sensor is mounted on the timing chain cover. The 1x sensor is located on the back of the motor.

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Page 7

INSTALLATION INSTRUCTIONS 7

Controller area network (CAN): The kit utilizes a CAN communication for wiring between the fuel

rails, Power module and Handheld Monitor.

Crank sensor: The kit supports both the 24x and the 58x crankshaft

trigger wheels. The easiest way to identify which crank trigger wheel is in the motor, remove the starter, crank sensor (behind the sensor), and look into the motor to identify the crank trigger wheel (Figure 16).

Engine Coolant Temperature (ECT) sensor: The engine coolant

temperature is monitored by the ECU for fuel and ignition adjustments in closed loop operation.

Fuel Pressure (FP) Sensor: The kit includes a fuel pressure sensor

which is already installed on the driver side fuel rail.

Idle Air Control (IAC) Sensor: The kit has a connector on each

rail to accommodate different intake styles. The sensor only plugs into the driverside IAC connector.

Ignition Coils: The kit has a factory connector that will connect to

the factory coil bracket harness on each valve cover (not

Figure 16 Crank Shaft

Reluctors.

supplied with the kit). There is an extra ground wire with each coil bracket connector that should be grounded to the back of each cylinder head.

Injectors: The kit supports following injector part numbers -

Delphi connector (Figure 17) :

GM:17113553 AC Delco:17113553 GM:17113698 AC Delco:17113698

EV6 connector (Figure 18):

GM:12574927 AC Delco:217-1563 GM:12613411 AC Delco:217-3411 GM:12250681 AC Delco:217-1621

The kit does NOT support the following ﬂex fuel injector-

GM:12580426 AC Delco:217-1626

Figure 17 Delphi

Connector.

Figure 18 EV6

Connector.

Intake Air Temperature (IAT) sensor: The sensor is supplied in the parts bag. It is recommended

to install the sensor in the intake air track before the throttle body. A ¾” hole is required for the sensor.

Map sensor: The kit supports the original equipment (OE) Delphi and Bosch sensors. A harness

is supplied for each sensor.

Oil Pressure (Oil) sensor: The kit utilizes the factory oil pressure sensor. There are different style

sensors, but the connector is the same between these sensors.

Power: The heavy gauge wire supplies 12v to both fuel rails from the power module. Throttle Position (TPS) Sensor: The kit has a connector on each rail for the TPS sensor. This is

done for ease of installation and only the driver side connector is used. The kit only supports a cable driven throttle body at this time and includes an adapter harness for the TPS sensor used on a cable driven throttle body.

Wide Band O2 Sensor: A wide band O2 sensor is supplied with the kit. The O2 sensor is used by

the ECU to monitor air/fuel ratios (AFR) in the exhaust gases. Adjustments are made by the ECU in closed loop to maintain (AFR).

Variable Valve Timing (VVT): The kit supports the VVT system. Plugs into VVT Connector on the

front of the timing chain cover in VVT capable engines.

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Page 8

8 INSTALLATION INSTRUCTIONS

*INJECTORS ADAPTERS

ARE INTERCHANGEABLE.

(EV6 Adapters shown)

NOTE: Do not cross the

injector harnesses when

installing them on the

injectors.

PASSENGER

SIDE

MODULE

POWER

Red - POWER

CAN

ETC/

A. Brown

B. Pink

C. Brn/White - Gnd

D. Not Used

V V T

D. Black - Coil 2B

E. Green - TPS1

F. Orange - 5V

G. Violet - TPS2

H. Not Used

A. Brown

B. Pink

C. Brn/White - Gnd

D. Not Used

E. Green - TPS1

F. Orange - 5V

G. Violet - TPS2

H. Not Used

ETC/TPS

D L PHI

D LPHI

IAT

IAC2

A. Black - Ground

B. Violet - Signal

A. Orange - Coil 1B

B. Gray - Coil 1A

C. Blue - Coil 2A

CURRENTLY

USED)

(NOT

A. Orange - Coil 1B

B. Gray - Coil 1A

C. Blue - Coil 2A

D. Black - Coil 2B

B. Yellow - Signal

ECT

IAC

Orange - AC

INJ2*

1. Signal

2. 12V

A. Black - Ground

1. Signal

2. 12V

INJ1*

INJ4*

1. Signal

2. 12V

1. Signal

2. 12V

INJ3*

MAP

A. Orange - 5V

B. Lt Green - Signal

C. Brown - Ground

F. Green - Coil 3

G. Tan - Coil 1

H. Pink - 12V

A. Pink - 12V

B. Orange - 5V

C. Brown - Ground

D. Brn/Wht - Signal

GROUND

CAM

Black

EFG

COILS

2, 4, 6, 8

C. Lt. Green - Coil 4

D. Not Used

E. Brown - Ref Gnd

F. White - Coil 6

G. Lt. Blue - Coil 8

H. Pink - 12V

A. Black - Ground

B. Blue - Coil 7

C. Brn/White - Coil 5

D. Not Used

E. Brown - Ref Ground

1, 3, 5, 7

COILS

Black - GROUND

A. Black - Ground

B. Tan - Coil 2

1. Black - Ground

2. Orange - 5V

3. Lt Blue - Signal

FPS

INJ6*

2. 12V

1. Signal

2. 12V

INJ5*

1. Signal

INJ8*

2. 12V

1. Signal

2. 12V

INJ7*

D. Org/Yel - Signal

1. Signal

2. Orange - 5V

3. White - Signal

OIL

CRANK

A. Pink - 12V

B. Orange - 5 V

C. Brown - Ground

Red - POWER Red - POWER

1. Black - Ground

4. Black - Gnd

5. Orange - Crank

6. Brown - Cam

7. Blue - Tsync

8. Gray - Shield

CAN

1. Green - CAN LO

2. Yellow - CAN HI

3. Blk/Red - Gnd

TPS Signal -

Blue

ALTERNATOR NOTE:

Both types of alterna-

tor connectors have

been provided to

accommodate the

different configurations.

Cut the one not used

and cap the wire with

the heatshrink provided

in the parts bag.

1. Orange - 5V

2. Black - Ground

3. Blue - Signal

TPS ADAPTER

A. Not Used

B. Brown - L Term

C. Not Used

D. Not Used

ALT

1. Brown-L Term

2. Not Used

ALT

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Figure 19 Wiring

DRIVER

SIDE

Page 9

INSTALLATION INSTRUCTIONS 9

POWER MODULE INSTALLATION

The Power Module of the Atomic EFI system handles high current circuits such as the fuel pump and WBO2. The unit has two ports for the MSD CAN system as well as a wiring harness. The CAN ports will provide communication between the Power Module, the passenger side fuel/ECU rail and the Handheld Monitor. It is important to select a proper mounting location for the Power Module. The unit can be mounted in the interior or the engine compartment as long as it is away from direct heat sources. It is not recommended to mount the unit in an enclosed area, such as the glove box. When a suitable location is found, make sure all wires reach their connections. Also be sure that the CAN port can be accessed for use with the Handheld Monitor. Use the Power Module as a template and mark the location of the holes. Use a size #20 drill bit to prepare a hole for the supplied self tapping screws.

CONTROLLER

Assemble the sleeves in the power module (Figure 20).

Figure 20 Mounting Hardware.

MONITOR

CONNECTOR

ONLY

POWER MODULE WIRING (Figure 21)

Not all of the wires from the Power Module need to be connected for proper operation of the Atomic LS Truck kit. Some of the wires such as the nitrous input or electric fan controls, only need to be connected if their functions are being used. In the chart labeled Power Module Wiring, wires marked “REQ” must be connected for the system to operate while those marked “OPT” are optional depending on

FUEL PUMP

GROUND

BATTERY 1*

BATTERY 2*

the features needed. For the initial installation and start up, it is recommended to connect only the required

* BATTERY 1 AND 2

MUST BOTH BE CONNECTED

wires. NOTE: The Power Module uses two heavy gauge (Red) wires that connect to the battery. Both leads must be connected in order for the Power Module and Atomic LS Truck kit to operate correctly.

ORANGE

BLACK

HEAVY RED

Figure 21 Power Module Wiring Diagram.

CAN ONLY

RED SLED POWER RED FAN 1 DARK BLUE LAUNCH BROWN/WHITE NITROUS BROWN SPEED REF (-) LT BLUE SPEED (+) GRAY TACH RED SW 12V ORANGE FAN 2 LT GREEN MIL GROUND

RED

YELLOW

H-

BLK/WHT

H+

BLK/RED

GREEN

BLACK

HANDHELD

MONITOR

TO PASSENGER

FUEL RAIL

CAN TO

PASSENGER

FUEL RAIL

• ConnecttheCANfromthefuelrailsintothecenterCANportonthePowerModule.

• ConnecttheHandheldMonitortotheCANportontheCanPortontherightsideofthePowerModule.

• Connectthe16-pinGTconnectorharnessincludedinthekit.

• Connectthe4-pinDeutschconnectharnessincludedinthekit.

• ConnectthewidebandO2sensorincludedinthekit.

• Makeallthenecessaryelectricalconnections.

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Page 10

10 INSTALLATION INSTRUCTIONS

Power Module

1 2

4-Way

Deutsch

CONNECTOR

3 4

A B C

F G H

CONNECTOR

GT Series 16 Way

L M N

P R S

Color

Red Black Orange Red Red Blue Bro/Wht

Brown Lt Blue Gray Red Orange Red Red Yellow Blk/Wht Blk/Red Green Black Lt Green

Use

REQ REQ REQ REQ OPT OPT OPT

OPT OPT OPT REQ OPT REQ REQ REQ REQ REQ REQ REQ OPT

Function

Battery 1, Must be connected to Positive (+) Battery terminal. Ground, Connect to solid, clean engine ground. Pump, Connect to Fuel Pump Positive terminal. Battery 2, Must be connected to Positive (+) Battery terminal. Fan 1, Supplies ground to activate Fan 1 2 Step Connect to switched 12V to activate.

Nitrous, When supplied with 12 volts, timing will be retarded and the

air/fuel ratio will be corrected to the target nitrous setting.

Speed Ref. (-) Speed Signal (+) Tach, Supplies 12V square wave signal Switched 12V, Connect to ignition switch Fan 2, Supplies ground to activate Fan 2 at desired temperature. Supplies power to the Fuel Rail

H-

WBO2

H+

MIL Ground

This wire functions as a Malfunction Indicator Lamp (MIL). This wire will provide a ground in the event of a diagnostic code.

FUEL SYSTEM REQUIREMENTS

The Atomic LS fuel injection system requires a high pressure fuel pump system. The fuel system is not supplied due to the large variety of applications incorporating the LS engine platform. Depending on the engine combination, the Atomic LS requires a minimum of 58-62 psi continuous to operate. When selecting a pump, regulator and lines, be sure each component is designed to perform at high pressure. MSD offers fuel pumps, fuel hose and accessories to complete the installation. The following guidelines are intended to help set up a fuel system for the Atomic LS. The Atomic is capable of operating with a return or returnless style system.

•Whenrunningareturnlessfuelsystem(PulseWidthModulated)thefuelpumpmustbemountedinthe

tank. This will result in quieter operation, a reduction in pump temperature, and a less likely chance of fuel pump cavitation.

• MSD supplies-6 ANPush-Lock stylettingsfor thefuel rails.These ttingsmust beused with

MSD's high pressure EFI hose.

• Ifmountingthepumpinthetankisnotanoption,installthepumpascloseaspossibletothetank.

Mounting low to tank within 2-feet of sending unit is recommended. MSD recommends the Atomic Fuel Pump, PN 2925 or PN 2926..

• Whenusing aPWMfuel system, pulsationsandharmonics could causeunstablefuelpressure

that can result in fuel pump cavitation or poor engine performance. For this reason MSD does not recommend the use of a hard line for the fuel system in PWM mode.

Note: Ensure Fuel Pump is PWM capable.

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Page 11

INSTALLATION INSTRUCTIONS 11

, MOUNT

FUEL SYSTEM INSTALLATION

FUEL RAIL

(UNDER COVER)

-6 90° FITTING SUPPLIED

FUEL RAIL

(UNDER COVER)

NOTE: IF RUNNING A RETURNLESS FUEL SYSTEM, THE PUMP MUST BE MOUNTED IN THE TANK.

MSD ADJUSTABLE

REGULATOR

FUEL

FILTER

FUEL TANK

FUEL

PUMP

IT IS RECOMMENDED TO MOUNT THE FUEL PUMP IN THE TANK WHENEVER POSSIBLE. IF IT MUST BE MOUNTED EXTERNALLY THE PUMP WITHIN 2-FEET OF THE FUEL TANK SENDING UNIT.

Figure 22 Fuel Line Routing.

IN-TANK PUMPS

The MSD Atomic Fuel Pump (not supplied) can be used in the tank however it would require a sock, or ﬁlter element on the pickup side of the pump. It is important to note that the wiring used to run the pump will need to meet requirements to be submersed in fuel. When wiring an in-tank pump, it is recommended to use a wire that conforms to SAE speciﬁcations J1128 and J378. This wiring features a Thermoplastic insulated wiring with polyvinyl chloride insulation for protection against gasoline, oil, and more. In addition, different fuel line will be required internally if the pump is to be mounted in the tank. Fuel line that meets SAE 30R10 speciﬁcations MUST be used. Failure to do so will cause severe damage to your engine and/or fuel system.

WARNING: Improper installation or use of fuel system components can cause severe damage your

engine and/or fuel system that will not be covered by the manufacturer’s warranty.

Atomic Fuel Pump, PN 2925: This pump features 3/8” inlet and outlet. The pump will support

approximately 525 hp and is approved for in-tank use (no wiring or in-tank mounting hardware/ pickup element are supplied).

Fuel Pump Kit, PN 2920: This Kit is supplied with MSD’s PWM Fuel Pump, a pre and post-ﬁlter, 15-ft

of 3/8 fuel injection line and mounting hardware.

Fuel System Return Kit, PN 2922: If you plan on running a return line with your Atomic LS, this kit

provides another 15-ft of 3/8” injection line, an MSD Regulator and two push-lock ﬁttings.

High Horsepower Fuel Kit, PN 2921: This pump will support the power demands of engines up to

650 horsepower. The pump features 3/8” inlet and outlet. The pump will support approximately 650 hp and is approved for in-tank use (no wiring or in-tank mounting hardware/sock are supplied).

FUEL INLET FITTINGS AND CROSS-OVER LINE

LS engines require a cross-over fuel line to route the fuel from one bank to the other. This is typically done at the front of the engine (Figure

23). Due to the variety of intake manifolds and accessories a cross-over line must be made for each application.

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Figure 23 Installing Fuel Hose to the Push-Lock Fittings.

Page 12

12 INSTALLATION INSTRUCTIONS

MSD supplies a length of fuel hose and two 90° -6AN ﬁttings to prepare a fuel crossover line. The ﬁttings utilize Push-Lock technology and are designed exclusively for use with the supplied hose. These ﬁttings do not use clamps, however it is imperative to follow the installation instructions.

Proper installation begins with a clean, square cut of the hose. A hose cutting tool or new razor blade are recommended. When installing the hose it is important that the hose is pushed on all the way to the thin beauty ring (Figure 24). This means the hose should fully overlap the inboard barb. Too little of engagement, as well as overengagement, will result in a compromised connection that is prone to failure.

1. Determine the length of hose needed. Mark the hose and cut it using a hose cutter or new razor blade. There should be minimal disturbance of the outer jacket, braids and inner liner. The cut plane should be perpendicular to the hose axis. (Figure 25).

2. Before installing the hose to the ﬁtting, it is important to anchor the ﬁtting. Proper installation cannot be achieved by holding the hose and ﬁtting in your hands. For best results, the hose should be installed with minimal twisting or pausing.

3. Apply a light coat of oil to the barbs on the ﬁtting and inside the hose. Use care not to get oil on the outside of the hose as it will be impossible to get a ﬁrm grip on the hose.

4. With the ﬁtting anchored securely, push the hose over the barbs. The hose is properly installed when it is ﬂush with the thin edge of the beauty ring (Figure 26). At this point, the hose end should have rolled over the

inboard barb.

WARNING: MSD’s Push-Lock ﬁttings are designed

for use with the MSD fuel hose only. Do not use the MSD fuel hose with other fittings. Do not use MSD Push-Lock ﬁttings with other fuel hose. Compatibility issues may cause fuel leaks. Fuel Inlet Fittings and Cross-Over Line: LS engines require a cross-over fuel line to route the fuel from one bank to the other. This is typically done at the front of the engine. Due to the variety of intake manifolds and accessories a cross-over line must be made for each application.

The supplied MSD Push-Lock AN

ﬁttings are designed only for use with the supplied fuel hose (Aeroquip AQP FC598). We do not recommend mixing Push-Lock style ﬁttings and hoses from different manufacturers. Doing so may result in fuel leaks and expose other dangerous incompatibilities.

Figure 24 Installing Fuel Hose to the Push-Lock Fittings.

CORRECT CLEAN, SQUARE CUT

INCORRECT JAGGED, ROUGH CUT RESULTS IN A COMPROMISED CONNECTION

Figure 25 Severing the Hose Properly.

Properly Installed Push-Lock Fitting

END OF HOSE IS FLUSH WITH THE THIN EDGE OF THE BEAUTY RING.

Improperly Installed Push-Lock Fitting

EXCESSIVE GAP TO BEAUTY RING RESULTS IN A COMPROMISED CONNECTION.

Figure 26 Installed Push-Lock Fitting.

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Page 13

INSTALLATION INSTRUCTIONS 13

POSITION

WIDE BAND OXYGEN SENSOR INSTALLATION

The MSD Atomic EFI system requires a single Wide Band Oxygen Sensor (WBO2) for operation. MSD

02 SENSOR

suggests that the bung for this sensor be installed prior to starting any other part of the conversion process. By having the WBO2 in place ﬁrst, there is a reduced chance of the vehicle being immobilized for an extended time. The bung for the WBO2 provided

AT LEAST 10°

by MSD has a plug included so that the vehicle can be driven between the time of exhaust modiﬁcation and installing the rest of the Atomic system, if needed.

The WBO2 can be installed in either exhaust bank.

EXHAUST COLLECTOR

Figure 27 WBO2 Sensor Location.

The sensor connects to the Power Module, so install the sensor on the bank closest to where you plan to mount the Module. The bung should be installed by a qualiﬁed exhaust technician and pressure tested. Proper installation of the oxygen sensor is critical to the performance of the Atomic EFI. Improper installation could lead to engine damage.

1. Locate the ideal spot to install the WBO2. a. This location should be 2-4 inches after the exhaust collector. The sensor must be more than

18 inches forward of the exhaust tip. For applications where short or open headers are used, install the WBO2 in the primary tube of the rear cylinder at least 8 inches away from the exhaust port. The Atomic will not work on “Zoomie” style headers.

b. The WBO2 sensor should be at least 10˚ above horizontal to allow condensation runoff.

Without this angle the sensor is signiﬁcantly more likely to sustain water damage (Figure 27). c. Never place a WBO2 on the outside of a bend. d. The WBO2 must be mounted in the exhaust prior to any catalytic converter, if applicable.

2. Drill a 7/8” hole in the exhaust where the WBO2 will go.

3. Weld in the supplied bung. Ensure the weld goes completely around the bung and is air tight.

4. Insert supplied plug in bung. Never run the vehicle with a WBO2 installed but not plugged in to the harness and powered up; it will damage the sensor.

5. When completing the Atomic EFI installation, remove the plug and insert the WBO2 for use. MSD suggests using a small amount of anti-seize on the threads.

Note: The Atomic EFI is extremely sensitive to air leaks in the exhaust system. Any air leak between

the engine and the WBO2 will cause the Atomic to have false readings, which can lead to poor engine performance, misﬁres, and an inability to properly auto-tune. Extended running of the Atomic EFI with an exhaust leak can result in detonation and severe engine damage. Improper installation of the oxygen sensor, and any damage that may result from such an installation, is not covered by the manufacturer’s warranty.

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14 INSTALLATION INSTRUCTIONS

WARNING: DO NOT ATTEMPT TO START THE ENGINE. Before turning the ignition key to the

ON position, conﬁrm all fuel line connections are tight and all electrical connections are correct. After conﬁrming all electrical connections and fuel lines, turn the ignition key to the ON position. Check every hose and ﬁtting connection for any signs of fuel leaks. The Handheld screen should illuminate and display the Main Menu.

PROGRAMMING

The Handheld Monitor plugs into the Power Module via the CAN connection. It can be removed once the initial setup is complete, or can remain connected for use of features such as the dash or digital gauge displays. The Handheld Monitor features a joystick to scroll through the settings. Scroll up and down to the setting and push the joy stick to the right to select the options. When the selection is made, either push in, or go back (push to the left) to save/conﬁrm settings changes.

MAIN MENU

Six selections will come up the Monitor under the Main Menu. If this is the ﬁrst time powering up the Atomic LS, select Initial Setup (Figure 28).

Atomic LS Dash: This selection allows you to view a variety

of engine functions in real time when the engine is running. Refer to page 21 for a complete description of each parameter in the Atomic Dash.

Atomic LS Gauges: This setting puts ﬁve important values

in gauge form to ease viewing the data. This includes engine rpm, oil pressure, engine coolant temperature, speed (when connected), battery voltage, and air/fuel ratio.

Initial Setup: These are values that are required to start the

engine.

Advanced Setup: Optional settings for features and optimized

drivability settings.

Diagnostics: This screen will help you troubleshoot and

identify potential issues.

Display Setup: Provides adjustments for the appearance of

the monitor screen. See page 20 for more information.

Main Menu

Atomic LS Dash

Atomic LS Gauges

Figure 28 Monitor Main Menu

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Page 15

INSTALLATION INSTRUCTIONS 15

INITIAL SETUP PROGRAMMING

Scroll down to Initial Setup and push the joystick to the right. The following parameters must be programmed.

Engine Type: This value determines the engine platform (Figure

29). There are over 26 engine combinations to select from. This setting is important as once an engine type is programmed, other settings will default to the OEM components that were supplied on that engine.For example, if LQ4 is selected, the coil, injector and MAP sensor will automatically set to the OEM components.

Engine Size: Once the engine type has been selected, the

stock cubic inches will automatically be set. If the engine has been modiﬁed with a different stroke or bore, select and input the size. The range is from 100-800 cubic inches (Figure 29).

Camshaft Type: There are three cam selections to choose;

Street/Stock, Mild and Performance. Note that if the lobe separation angle (LSA) is less than 108°, it is recommended to input the next larger cam. Cams with over 250° are not recommended for use with the Atomic LS system (Figure 29).

Handheld Main Menu

Engine Type

CAM

DURATION AT .050"

Street Stock Less than 210° Mild 211° - 230° Performance 231° - 250°

Coils: Once the engine type is selected, the OEM coil pack

will be automatically loaded in the default calibration ﬁle. If a different coil or an MSD LS Coil pack is used, change the setting to the correct coil type (Figure 29).

Note: There is a setting in Display Setup labeled User Mode.

When User Mode is changed from Basic to Advanced, the coil selection menu will open up to all the coil combinations preprogrammed into the Atomic LS system.

Engine Size

Camshaft Type

Coils

Figure 29

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16 INSTALLATION INSTRUCTIONS

Fuel Injector: Once the engine type is selected above, the

OEM style injector will be automatically loaded in the default calibration ﬁle. If a different injector is used, change the setting to the correct injector. Most LS based injectors have the part number stamped on them (Figure 30).

Note: There is a setting in Display Setup labeled User

Mode. When User Mode is changed from Basic to Advanced, the fuel injector selection menu

Fuel Injector Type

will open up to all the fuel injector combinations preprogrammed into the Atomic LS system. This setting will also unlock a setting called User Deﬁned. User Deﬁned allows the injector ﬂow rate to manually be entered by selecting Set Calibration (Figure 30).

MAP Sensor: Once the engine type is selected above, the

OEM MAP Sensor will be automatically selected. (Figure 30).

Fuel Injector

Note: There is a setting in Display Setup labeled User

Mode. When User Mode is changed from Basic to Advanced, the MAP sensor selection menu will open up to all the MAP Sensor combinations preprogrammed into the Atomic LS system. This setting will also unlock a setting called User Deﬁned. User Deﬁned allows the Slope and offset to manually be entered by selecting Set Calibration.

Injector Lbs/Hr

Fuel Pump Type: There are three selections for the fuel pump

system. Select the system in use with the Atomic LS Truck system (Figure 30).

•Pulse Width Modulated: This selection is used

only when running a returnless fuel system with NO regulator.

•Non-PWM with Regulator: This selection is used

when running a return style system with a regulator.

•PWM with Regulator: This selection is used when

running a return style system with a regulator. It will run the pump at 50% duty cycle at idle producing quieter pump operation and will increase the duty cycle to 100% as the throttle and injector load increase.

Note: It is recommended to use Non-PWM with a regulator

when setting fuel pressure as the PWM setting may decrease fuel pressure slightly at idle.

Map Sensor

Fuel Pump Type

Figure 30

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INSTALLATION INSTRUCTIONS 17

Idle RPM Target: Select the rpm that the engine should idle

at. The rpm range is adjustable in 25 rpm increments (Figure 31).

Note: Running too high of an idle speed in an automatic

transmission equipped vehicle with a stock torque converter can cause idle issues in gear.

Rev Limit: The rev limiter can be set as a fuel cut-off or ignition

cut-off limiter. The default setting is as a fuel cut-off limiter set at 6500 RPM. The programming range for both rev-limiters is 3000 RPM-10,000 RPM (Figure 31).

Idle RPM Target

The ignition cut should only be used on race vehicles with a very free ﬂowing exhaust. DO NOT use with

catalytic converters or severe damage may result!

Variable Cam Timing: The Atomic LS truck system supports

the factory Variable Cam Timing. The default setting is set at Disable. Change the setting to Enable for use with a factory VVT engine (Figure 31).

Once all of the settings in the Initial Setup menu are selected, the Atomic has enough information to start and run the engine. It is recommended to scroll through the advanced settings to program selections that may be useful after the initial start up (such as the cooling fan activation temperatures).

ADVANCED SETUP

The Advanced Setup features are optional as the Initial Setup menu provides the Atomic EFI with the values needed to run the engine. Features in the Advanced Menu are designed to deliver additional features and advanced tuning functions to further enhance the drivability and overall performance of the engine. Fans: This setting sets the temperatures to activate two electric

fans. Each circuit will be activated by supplying ground through the Red (Pin A) and Orange (Pin H) wires of the GT-Series 16 pin harness from the Power Module. A relay is required for both circuits since those wires are a low current ground. The fans will activate at the desired temperature and will remain on until the temperature falls below 10° of the setting. Settings are 100°-300°F (Figure 31).

Rev Limit

Cam Timing

Advanced Setup

Fans

Figure 31

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18 INSTALLATION INSTRUCTIONS

A/F Targets: The Atomic LS provides an option to set an air/fuel

target for Idle, Part Throttle, Wide Open (WOT), Nitrous and Boost. The Atomic will use its self-learning technology to adjust the fuel delivery to meet the target air/fuel ratio. The values are adjusted in 0.1 increments and range from rich at 10:1 to dead lean at 16:1. The ideal air/fuel ratio for cruising is called stoichiometric and is commonly referred as a 14.7:1 air/fuel ratio.

Boost: The Atomic will switch to the commanded boost

A/F ratio once the manifold pressure reaches

A/F Targets

110Kpa (approximately 16 psia - 32.5in/Hg) (Figure 32).

Ignition Timing: The Atomic provides a base timing table for each

engine application. You can also modify these settings at idle (closed throttle), part throttle, wide open throttle (WOT), nitrous, and boost. Each setting is adjustable +/-10°. Note that the values programmed are set for stock engines using 91 octane fuel. For lower octane fuels it is recommended to retard the timing 5° as a starting point. Timing can be retarded up to 20° in 0.1° increments. Note that in order

Igniton Timing

to alter the timing for nitrous use, the Nitrous Selection in the Advanced menu MUST be programmed to ENABLE. When the nitrous is activated by supplying 12 volts to the Brown/White (Pin C) wire the timing will retard (Figure 32).

TPS Enrichment: To assist in throttle transitions the Atomic EFI

has a feature to increase fuel delivery by a prescribed percentage any time there is an increase in throttle position. If needed, make small changes in no more than 5% increments without further testing. Most engines will ﬁnd 25% sufﬁcient. Most applications will accept 15%-35%

TPS Enrichment

enrichment. Adjustable from 0-100% in 1% increments (Figure 32).

MAP Enrichment: To assist in manifold pressure transitions the

Atomic EFI offers a MAP enrichment feature. This function adds fuel based on MAP transitions while moving the throttle. Large cam vehicles with low vacuum generally required a slightly smaller number while stock/small camshaft vehicles with a high vacuum may require more. If needed make small changes of no more than 5% increments without further testing, 25% is sufﬁcient for

MAP Enrichment Setting

most engines but between 15-35% is normal. Typically, the higher the vacuum the higher the percentage needed. Adjustable from 0-100% in 1% increments (Figure 32).

2-Step: This setting will rev-limit the engine at the programmed

RPM when the Blue wire is activated with 12V. The 2-Step setting is used in drag racing applications to help launch the car at a consistant RPM. The blue wire is normally connected to a clutch switch or a brake switch. The default setting is 10,000 RPM and can be adjusted from 1000 RPM to 7500 RPM in 25 RPM increments (Figure 32). The ignition cut should only be used on race vehicles with a very free ﬂowing exhaust. DO NOT use with catalytic

2-Step RPM Limit

Figure 32

converters or severe damage may result!

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Page 19

INSTALLATION INSTRUCTIONS 19

Nitrous: This setting enables the nitrous timing retard in the

Ignition timing and the nitrous AFR in AF Target setting. The default setting is DISABLED (Figure 33).

Calibrate Speed: If there is speed output on the transmission,

a reference signal can be delivered to the Atomic LS. On manual transmission equipped vehicles, the Calibrate Speed option improves drivability when transitioning from high RPM conditions to an idle (such as comming off of a hill / between moving and coming to a complete stop). The Power Module has

Advanced Setup

a Brown (Pin D) wire and a Light Blue (Pin E) wire. These wires connect to a magnetic pickup monitoring driveshaft speed with a collar mounted on a yoke. To program the calibration, drive to 40mph on an open road to maintain speed. Once at 40mph, select YES on the handheld. This will calibrate the speed input. This option will also enable a speedometer reading in the handheld Atomic LS Dash (Figure 33).

Note: Use of a minimum four magnet collar is

recommended with this option.

Enable or Disable Nitrous

Racepak Dash: This setting allows the Atomic LS Truck kit to

interface with a Racepak dash such an IQ3. Disable is the default setting. Racepak offers an optional V-net sensor to connect their dash to the MSD Can-Bus connector (Figure 33).

Speed Reference Setting

Racepak Dash Option

Figure 33

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Page 20

20 INSTALLATION INSTRUCTIONS

PRE-START CHECK LIST

Before attempting to start the motor, run through the pre-start check list to ensure a safe and successful start.

•Double-checkallwiring

•Powerandgroundleadsareconnecteddirectlytothebattery.

•Red(PinG)shouldbeconnectedtoa12vignitionsourcethatishotintheRUNandSTARTpositions

of the key cycle.

•Allwiring,modules,andfuelcomponentsaremountedawayfromheatsourcessuchasexhaust

and pinch points.

•WidebandO2sensorisinstalledandpluggedintothePowerModule

•Therearenoexhaustleaks.

•Thethrottlelinkageisconnectedandmovesfreelywithnobinding.

•Theinitialprogramminghasbeensetinthehandheldmenu.

•Keyontheignitionafewtimestoprimethefuelpump.Thefuelpressuremayneedtobeadjusted

to 58-60psi. Fuel pressure can be monitored in the Atomic Dash section of the handheld menu.

•Withthefuelsystemunderpressurefromprimingthesystem,checkforleaksorfuelspraying.Do

not attempt to start the engine if fuel leaks are present.

•MonitorEngine RPM inthe AtomicDashin thehandheldunit astheengine iscrankedover to

ensure the crank sensor is providing an RPM signal.

HANDHELD DISPLAY OPTIONS

Display Setup: The display Setup controls the look of the

handheld unit and the Firmware version. The Atomic LS can be reset to factory default in this section as well (Figure 34).

LCD Contrast: Adjust the contrast on the LCD screen if it is

hard to see the display. Contrast is adjusted using the joystick to go up or down in ﬁve percentage increments.

Backlight Level: The brightness of the screen is determined

by this setting. The Backlight Level may need to be adjusted depending on outside light levels. Brightness is adjusted using the joystick to go up or down in ﬁve percentage increments (Figure 34).

Display Units: The Atomic can display items in either English (cubic inches, Fahrenheit) or Metric

(liters, Celsius). Set Atomic Defaults: Use this feature to reset the Atomic EFI. Selecting “YES” on this screen will take all setting, including fuel maps, back to the factory defaults. This can be done when installing the Atomic on a different engine, or for troubleshooting reasons (Figure 34).

User Mode: This setting can be changed from Basic to Advanced. When the User Mode setting is

changed to Advance the fuel injector selection menu, coil selection menu, and the MAP sensor menu will open up to all the combinations preprogrammed into the Atomic LS system. The fuel injector ﬂow rate and MAP sensor Slope and Offset can be manually entered by selecting user deﬁned in the selection menu (Figure 34).

Set Atomic Defaults: This setting resets all the programming parameters to the default settings out

of the box (Figure 34).

Firmware Versions: The Atomic Firmware version can be found in this section (Figure 34).

Figure 34 Monitor Display Selections.

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Page 21

INSTALLATION INSTRUCTIONS 21

The Atomic LS Dash is a live display when the engine is running. This is a brief description of each parameter in the Atomic LS Dash.

ATOMIC LS DASH:

Tach Displays engine RPM. Speed Displays Speed if speed if speed sensor is equipped and calibrated. ECT Displays coolant temperature. IAT Displays intake air temperature. TPS Displays throttle position sensor percentage. BARO Displays barometric pressure MAP Displays manifold absolute pressure FUEL PRESS Displays fuel pressure. OIL PRESS Displays oil pressure. BAT VOLTS Displays battery voltage. A/F RATIO Displays air/fuel ratio. INJ DUTY Displays injector duty cycle. IGN TIMING Displays ignition timing. IAC POS Displays idle air control motor position. THROTTLE Displays throttle condition closed/part/WOT (Wide Open Throttle) CLOSED LOOP Displays closed loop on or off. LEARNING Displays Atomic LS learning on or off. FAN 1 Displays Fan 1 on or off. FAN 2 Displays Fan 2 on or off. DECEL FUEL Displays if decel fuel is active IDLE COND Displays if engine is in an idle condition FLOOD CLEAR Displays if throttle is in a ﬂood clear condition (no fuel will go in) REV LIMIT Displays if the rev limiter is active TWO STEP Displays if the two step is active. NITROUS Displays if the nitrous is active.

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22 INSTALLATION INSTRUCTIONS

DIAGNOSTICS

There is a self-diagnosing system built into the Atomic EFI. Each covered parameter can show a status in one of three ways (Figure 35).

• “OK”:theparameterisfunctioningnormally.

• “ErrorC”:thereiscurrentlyanerroroccurring.

• “ErrorH”:Apreviouserrorthathasbeenresetsinceitdid

not reoccur within the last ten ignition cycles.

The following chart gives the most likely solution(s) to each possible error.

Figure 35

CLEARING HISTORY ERRORS

CODE NAME

TPS

MAP

IAT

ECT

BATT

INJ DC

FUEL PRESSURE

WBO2

WHAT IT MEANS

There is no reading for the Throttle Position Sensor.

There is no reading for the Manifold Absolute Pressure Sensor.

There is no reading for the Inlet Air Temperature Sensor. The ECU will default to 275°F when shorted or -40°F when open.

There is no reading for the Engine Coolant Temperature Sensor. The ECU will default to 275°F when shorted or -40°F when open.

The Atomic is receiving the wrong voltage. The unit is measuring either less than 9 volts or greater than 16 volts.

Excessive Injector Duty Cycle

There is no reading for the Fuel Pressure Sensor.

A. "NOT CONNECTED" indicates that no sensor is detected. B. "ERROR" indicates that the sensor has failed.

PROBABLE CORRECTION(S)

The sensor may be at fault. Check wiring and/or replace sensor.

The sensor maybe at fault. Check wiring and/or replace sensor.

Faulty sensor; loose or no connection. Check wiring and/or replace sensor.

Check the battery connection from the Power Module to the battery. Ensure that the battery and alternator are working correctly.

If you are running a returnless fuel system, your engine's needs may exceed the Atomic's maximum capabilities. If you are running a return system check to see that you are maintaining the recommended fuel pressure. If you have adequate fuel pressure the engine's needs may exceed the Atomic's system capabilities.

Faulty sensor; loose or no connection. Check wiring and/or replace sensor.

A. Check to see that the sensor is securely plugged into the system. Inspect wiring if it is plugged into the system. B. The sensor will need to be replaced. Note that 'warming up' is normal during start-up for the ﬁrst 20 seconds.

FP CAV

MAP SELECT

BARO

This code will set if there is an issue with Fuel Pump Cavitation (similar to vapor lock). It can only set when running a returnless fuel system. This may occur when the commanded fuel pressure (from the ECU) is different than the fuel pressure (at the sending unit).

ECU compares the MAP reading with the Baro reading on key up. If these are different by more than 5kPa, the code is activated.

The Baro sensor voltage is out of range, and the ECU has defaulted to the last known good Baro value.

Check the fuel system and etermine that it meets the requirements to run a returnless (PWM) system. Check the ﬁlters, the sock in the tank, and inspect the lines for any kinks or pinches that would affect the fuel ﬂow and pressure of the system. If the code continues, the fuel system may need to be converted to an in-tank fuel pump and/or regulated (return) fuel system.

Double check your MAP selection and make sure that you selected the correct P/N of sensor. It could also mean a problem with the Baro or MAP sensor itself (see above codes).

Turn the ignition off. Wait 10 seconds, and turn the ignition back on. If the code remains, call customer service. Unless the vehicle has been through a large change in altitude since the last ignition on/off cycle (towed somewhere), everything will function normally.

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Page 23

INSTALLATION INSTRUCTIONS 23

CLEAR FLOOD

If a ﬂood condition occurs, turn the key on then press the accelerator to wide-open throttle. This tells the ECU to turn off the injectors. Crank the engine to clear the ﬂood condition until the engine starts (release the throttle).

Note: The TPS is self calibrating so the key must be in the ON position prior to pressing the accelerator.

INSTRUCTIONS FOR UPDATING THE ATOMIC EFI

In order to update the Atomic EFI you will ﬁrst need to download the updated ﬁles from AtomicEFI.com. (Right click and choose "Save Target As" if it doesnt download automatically)

UPDATED: 05-31-13 Version numbers below.

ALL THREE UPDATES MUST BE DONE SIMULTANEOUSLY

1. The update will reset all settings in the Atomic EFI. a. Be sure that you make note of all settings in the Initial and Advanced Set-ups prior to performing

the update.

2. Download the update ﬁles from AtomicEFI.com

a. Be sure they are saved in a place that you will ﬁnd them (the desktop is often the best place to

save them).

b. DO NOT rename the ﬁles, the Atomic EFI will only recognize ﬁles with the names assigned by

MSD.

3. Transfer the ﬁles to the Micro-SD Card that came with the Atomic.

You will need an SD Card reader for this – if you do already not have a reader, they can be found at most electronics stores for less than $10.

a. Open the Micro-SD card’s window on your computer. b. Drag and drop the MSD ﬁles into the folder. c. The ﬁles must remain in the main folder do NOT put them in a sub-folder.

4. Move the Micro-SD card to the Atomic EFI’s Handheld

5. Ensure the Handheld is plugged in to the Power Module

6. Turn the vehicle’s ignition switch to Key-On

a. Do not start the engine

7. At this time the Atomic will automatically update the Handheld.

a. This process will take approximately 30 seconds, do not remove power.

8. When the handheld update is complete you will be prompted to update the Atomic ECU as well.

a. Use the Handheld joystick see “YES” by pushing the joystick up. b. Push the joystick in to accept.

9. At this time the Atomic ECU will be updated.

a. This process will take approximately 30 seconds. b. The beginning of this process will display “Erasing” – this is normal, do not remove power. c. The handheld’s screen will notify you when the update is complete.

10. Use the handheld’s joystick to go back (left) to the main menu.

11. Input all previous settings for the Initial and Advanced setups.

12. Enjoy your updated Atomic EFI.

You can check to see that the Atomic update is successful by looking at the version numbers on the Handheld. To do so go to:

- Display setup

- Firmware versions

- Dash – 2.0.3

- EFI – 1.1.1

- P.M. – 1.0.7

MSD • WWW.ATOMICEFI.COM • (915) 855-7123 • FAX (915) 857-3344

Page 24

24 INSTALLATION INSTRUCTIONS

TECH NOTES

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Service

In case of malfunction, this MSD component will be repaired free of charge according to the terms of the warranty. When returning MSD components for warranty service, Proof of Purchase must be supplied for veriﬁcation. After the warranty period has expired, repair service is based on a minimum and maximum fee.

All returns must have a Return Material Authorization (RMA) number issued to them before being returned. To obtain an RMA number please contact MSD Customer Service at 1 (888) MSD-7859 or visit our website at www.msdperformance.com/rma to automatically obtain a number and shipping information.

When returning the unit for repair, leave all wires at the length in which you have them installed. Be sure to include a detailed account of any problems experienced, and what components and accessories are installed on the vehicle. The repaired unit will be returned as soon as possible using Ground shipping methods (ground shipping is covered by warranty). For more information, call MSD at (915) 855-7123. MSD technicians are available from 7:00 a.m. to 5:00 p.m. Monday - Friday (mountain time).

Limited Warranty

SD warrants this product to be free from defects in material and workmanship under its intended normal use*, when properly installed and purchased from an authorized MSD dealer, for a period of one year from the date of the original purchase. This warranty is void for any products purchased through auction websites. If found to be defective as mentioned above, it will be repaired or replaced at the option of MSD. Any item that is covered under this warranty will be returned free of charge using Ground shipping methods. This shall constitute the sole remedy of the purchaser and the sole liability of MSD. To the extent permitted by law, the foregoing is exclusive and in lieu of all other warranties or representation whether expressed or implied, including any implied warranty of merchantability or ﬁtness. In no event shall MSD or its suppliers be liable for special or consequential damages. *Intended normal use means that this item is being used as was originally intended and for the original application as sold by MSD. Any modiﬁcations to this item or if it is used on an application other than what MSD markets the product, the warranty will be void. It is the sole responsibility of the customer to determine that this item will work for the application they are intending. MSD will accept no liability for custom applications.

MSD • WWW.MSDPERFORMANCE.COM • (915) 855-7123 • FAX (915) 857-3344

FRM31716 Revised 07/13 Printed in U.S.A.

MSD 2957 Installation

Specifications and Main Features

Frequently Asked Questions

User Manual