Auto Meter 4381 User Manual

INSTALLATION INSTRUCTIONS

®

BOOST CONTROLLER

2650-1706-00

WARNING!

The installation of the Auto Meter Boost Controller is recommended only for experienced technicians. This product may damage your engine if used properly or

improperly. Use extreme caution during installation and operation. When increasing boost, it is recommended to carefully increase the pressure in small intervals to avoid

engine damage. Auto Meter Products is not responsible for any engine damage caused by improper installation or the use of this product.

The Auto Meter Boost Controller is intended for off-road use only.

NOTE: MAP Sensor should be mounted with
PRESSURE PORT facing down.
Failure to do so could result in
inaccurate readings due to
condensation in the line.
(Bracket fabrication may be required.)

12V BATTERY

Pressure Port

Tubing Adapter

Compression
Nut

Ferrule

Compression
Adapter

Map Sensor (see note)

Nylon
Tubing

Vacuum “T”

3

2

Boost Control

Valve

Pro Control

1

Pro Control Input

(Optional)

Out

Gray

Orange

+12v
Dash
Lighting

Tach

Signal

Green

Speed

Signal

Violet

White

Fuse
(see
caution
below)

Data Logger

Output

Data Logger and
Pro Control Ground

Blue

Black/White

Red

+12v Connection
*See step 8 below

Black

Good Engine
Ground

CAUTION!

Warranty will be void if connected to coil when using an aftermarket ignition box such as, but not limited to

WARNING!

products from the following manufacturers: MSD, Crane, Jacobs, Mallory, Holley, Etc.. Prior to installation of
your boost controller, check with the ignition box manufacturer for recommended tachometer signal location.

As a safety precaution, the +12V terminal of this
product should be fused before connecting to the
12V ignition switch. We recommend using a 3 AMP
automotive type fuse.

WIRING INSTALLATION

Red Wire (Power):

Connect to a switched +12 volt source.

Black Wire (Ground):

Connect to good engine ground.

White Wire (Lighting Power)

Connect to dash lighting power.

Green Wire (Optional Tach Signal)*

Connect to the negative terminal of a standard ignition coil, or to the "Tach Output" terminal on the electronic ignition module. (See Tach
Signal section for further details)

Violet Wire (Optional Speed Signal)**

Connect to vehicle speed signal. (See Speed Signal section for further details)

Blue Wire (Optional Data Logger Signal Output)***

Connect to signal input(+) or Engine Management System or Data Acquisition unit.

Black/White Wire (Optional*** Data Logger Signal Ground)***

Connect to signal input(-) on Engine Management system or Data Acquisition Unit.

Orange (Optional Pro Control Output)****

Ground trigger for auxiliary device. Maximum 2 amps at 12 volts. (See Pro Control section for further details)

Black/White Wire (Optional Pro Control Ground)****

Connect to a good ground only when Pro Control is used. Pro Control ground reference point. (See Pro Control section for further details)

Gray Wire (Optional Pro Control Ground)****

Grounding this will shut down the Boost Control Valve. This can connect the pro control output to another gauge.

* Only used if Boost by RPM or Boost by Gear is used
** Only used if Boost by Gear is used
*** Only used if vehicle is equipped with a data logger or PCM that can utilize the signal
**** Only used if Pro Control is desired to control an auxiliary electronic device

OPERATION

The Auto Meter electric boost controller operates by limiting the boost pressure seen by the wastegate to effectively increase the boost output
by the turbocharger. The Auto Meter boost controller offers configurable warnings, scalable bar graph display, and over boost protection but it is
important to keep watch of your boost levels to keep you and your engine safe. The boost pressure sensor has a maximum pressure capacity
of 30 PSI. Exceeding this pressure can cause damage to the sensor, connections, or most importantly, your engine. Data log output maximizes
at 30 PSI, exceeding this pressure may not be seen on the data log output signal. It is never recommended to increase the boost pressure over
double the wastegate spring pressure.

TACH SIGNAL (REFERENCE PULSES PER REVOLUTION, PAGE 6)

Connect the tach signal to the negative side of the coil* when using a standard ignition. HEI ignition systems will provide a tach signal terminal
off of the distributor cap. If using an electronic ignition module or a factory PCM, a tach signal may be available from the ignition box or PCM.

If the vehicle has multiple ignition coils and no tach output is available from the PCM, the Auto Meter tach adapter part number 9117 is
recommended. Contact Auto Meter if needed for additional information on your application.

*Warranty will be void if connected to coil when using an aftermarket ignition box such as, but not limited to products from the following
manufacturers: MSD, Crane, Jacobs, Mallory, Holley, Etc.. Prior to installation of your tachometer, check with the ignition box manufacturer for
recommended tachometer signal location.

SPEED SIGNAL (REFERENCE TACH AND SPEED SIGNAL TEST, PAGE 6)

If the vehicle has a factory speed sender, you may use the factory signal for the boost controller. This can be accomplished by splicing into the
factory signal from the sender or using a speed output from the PCM or transmission controller.
Any speed sender or electronic module that meets the following two conditions can be used:

1. Pulse rate generated is proportional to vehicle speed.

2. Output voltage within the ranges listed below:
a. Hall effect sender, 3 wire (5 to 16V)
b. Sine wave generator, 2-wire (1.4 VAC min.)
c. Source wave singal from ECM, PCM, TCM 5V to 16V
Recommended – Auto Meter Hall effect sender, 3 wire, 16 pulses/revolution
5291 Standard 7/8" - 18 Thread
5292 Ford, plug in

BOOST SOLENOID INSTALLATION

Install the boost control solenoid using new vacuum lines. Mount the boost solenoid away from any direct heat sources and route all vacuum
lines away from heat or moving parts. If the factory setup includes a restrictive mechanical control or an electric solenoid, they will need to be
bypassed for the boost controller to work as intended. It is recommended that the boost solenoid vent port is routed back into the intake, after
the air flow meter (if equipped) and prior to the turbocharger.

SINGLE TURBO - INTERNAL WASTEGATE SINGLE TURBO - EXTERNAL WASTEGATE, SINGLE PORT

Port 1 – Sintered muffler
Port 2 – To Wastegate
Port 3 – To turbo pressure source

Port 1 – Sintered muffler
Port 2 – To bottom port of wastegate
Port 3 – To turbo pressure source

Single Turbo – External Wastegate, Dual Port

This set up is used when higher boost are desired over the previous external
Wastegate single port application

Port 1 – To turbo pressure source, shared with bottom port if the wastegate
Port 2 – To both wastegates
Port 3 – Sintered muffler

TWIN TURBO – INTERNAL WASTEGATES

Port 1 – Sintered muffler
Port 2 – To both wastegates
Port 3 – To turbo pressure source