AEM 30-6053 Series 2 Plug Play EMS Installation Instructions

Installation Instructions for:

EMS P/N 30-6053

Fits vehicles:

2006-2008 Honda S2000 AP2 F22C1

WARNING:
This installation is not for the tuning novice nor the PC illiterate!
Use this system with EXTREME caution! The AEM EMS System
allows for total flexibility in engine tuning. Misuse of this
product can destroy your engine! If you are not well versed in

,!

This product is legal in California for racing vehicles only and should never be used

engine dynamics and the tuning of management systems or are
not PC literate, please do not attempt the installation. Refer the
installation to a AEM trained tuning shop or call 800-423-0046
for technical assistance. You should also visit the AEM EMS
Tech Forum at http://forum.aempower.com/forum/index.php

NOTE: AEM holds no responsibility for any engine damage that
results from the misuse of this product!

on public highways.

Vehicle fitment Series II EMS

2006-2008 Honda S2000 AP2 F22C1 30-6053

© 2010 Advanced Engine Management, Inc.

ADVANCED ENGINE MANAGEMENT INC.

th

2205 126

Street Unit A Hawthorne, CA. 90250

Phone: [phone] Fax: [phone]

http://www.aempower.com

Instruction Part Number: 10-6053

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Thank you for purchasing an AEM Engine Management System.

The AEM Engine Management System (EMS) is the result of extensive development on a
wide variety of cars. Each system is engineered for each particular application. The AEM
EMS differs from all others in several ways. The EMS is a stand alone system which
replaces the fuel and ignition functions of the factory ECU and features unique Plug and Play
Technology, which means that each system is configured especially for your make and
model of car.

For stock and slightly modified vehicles, the supplied startup calibrations are configured to
work with OEM sensors, providing a solid starting point for beginner tuning. For more heavily
modified cars, the EMS can be reconfigured to utilize aftermarket sensors and has many
spare inputs and outputs allowing the elimination of add-on rev-limiters, boost controllers,
nitrous controllers, fuel computers, etc. It also includes a configurable onboard 1MB data
logger that can record any 16 EMS parameters at up to 250 samples per second. Every
EMS comes with all functions installed and activated; there is no need to purchase options or
upgrades to unlock the full potential of your unit.

The installation of the AEM EMS on the supported vehicles uses the stock sensors and
actuators. After installing the AEMTuner software, the startup calibration will be saved to the
following folder on your PC:

C:\Program Files\AEM\AEMTuner\Calibrations\Honda - Acura\

Multiple calibrations may be supplied for each EMS; additional details of the test vehicle
used to generate each calibration can be found in the Calibration Notes section for that file.

Please visit the AEM Performance Electronics Forum at http://www.aempower.com and
register. We always post the most current strategy release, PC Software and startup
calibrations online. On the forum, you can find and share many helpful hints/tips to make
your EMS perform its best.

TUNING NOTES AND WARNING:

While the supplied startup calibration may be a good starting point and can save
considerable time and money, it will not replace the need to tune the EMS for your specific
application. AEM startup calibrations are not intended to be driven aggressively before
tuning. We strongly recommend that every EMS be tuned by someone who is already
familiar with the AEM software and has successfully tuned vehicles using an AEM EMS.
Most people make mistakes as part of the learning process; be warned that using your
vehicle as a learning platform can damage your engine, your vehicle, and your EMS.

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Read and understand these instructions BEFORE attempting to install this product.

• Sufficient battery voltage during cranking (starting)

Having enough battery voltage when you crank over your vehicle is critical to the
operation of your vehicle and your AEM EMS. For the EMS to function properly, the
battery voltage must remain at or above 8 Volts when the vehicle is first starting. This
is the time when your electrical system will be worked its hardest and be at its lowest
voltage. If you are connected to your Series 2 EMS with a USB communications
cable, and you experience disconnecting while the vehicle is cranking, the reason is
most likely a battery voltage of less than 8 volts (see Channel called “Battery Raw”
which is an unfiltered value of actual battery voltage being received by the EMS). If
this is the case, you can confirm this by connecting with a serial cable (a serial
adapter may be required if your computer is not equipped with a serial port) and
check in the AEMTuner software for a Channel called “Run Time” as well as the
“Battery Raw” to see at what voltage the EMS cuts out at. “Run Time” is the amount of
time, in seconds, that the EMS has been turned on for. If you notice that this Channel
resets to zero while the EMS is communicating with the computer and the vehicle is
being cranked, that means the EMS has had lower than 8 Volts at some point and has
reset the system. A thorough wiring check may reveal a large voltage drop causing
this problem, or it may simply be the need for a new or a larger battery.

• AEM adapter harness

The 2006-2008 Honda S2000 uses an electronically controlled throttle which will
remain controlled by the original ECU. The adapter harness provided will allow the
user to retain the original electronically controlled throttle while still being able to
control all other engine management aspects that you have come to expect from
AEM. In addition, the stock instrument cluster, air conditioning, and emissions controls
will continue to work as normal controlled by the original Honda ECU.

• Vehicle speed sensor

Currently, the speed sensor is the only circuit that causes a check engine light. This
will not affect the function of the electronically controlled throttle.

• Engine Wiring Harnesses, ‘swapped’ engine installations

It would be very wise to double-check that the pinout destinations for the circuits is
accurate to the provided documentation. This is especially true if the vehicle contains
a ‘swapped’ engine or if the wiring harness has been cut, spliced, soldered, tapped or
modified in any manner. It is the user’s responsibility to check that the wiring on the
vehicle matches the pinout chart in this document. AEM will not be held responsible
for loss or damage that can occur if the EMS is installed in a vehicle in which the
wiring harness does not match the AEM-supplied pinout chart!

• Retaining original O2 sensor

For the malfunction code for this sensor to remain off, the stock oxygen sensor must
be retained. However, when the air-fuel ratio is too rich with this sensor, in the case of
a turbo application, the check engine light will still come on. This will not have any
affect on the operation of the car including the electronically controlled throttle.

• Knock sensor

In the AEM wiring harness, the stock knock sensor has been tapped rather than
intercepted to keep the stock ECU from thinking it has a malfunction. The knock
sensor is less sensitive but still functional and the calibration for the sensor is lower by

0.3 Volts in the AEMTuner calibration. If you would like the knock sensor to be more

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sensitive, you can depin Pin A1 that goes into the stock ECU, but the malfunction
code for this sensor will turn on. If this is done, the knock sensor calibration will need

to have 0.3 Volts added to each breakpoint in the calibration.

• Traction control function

When active, the stock traction control system will be affected by adding the EMS.
The stock traction control system uses throttle, fuel, and ignition changes for the
traction control system. Since the fuel and ignition are no longer controlled by the
stock ECU, these aspects of traction control must now be configured in the calibration
in the EMS. The throttle will still be cut as normal, but the traction and stability control
warning lights will stay on after the system is no longer activated and will reset when
the vehicle is turned off.

• EMS Fuel Map, Boost Fuel Trim Table

The 30-6053 calibration maps provided utilize the “Boost Fuel Trim Table” to provide

a 1:1 fuel compensation above atmospheric pressure. However, since the calibration
was created on a naturally aspirated vehicle (A calibration is provided above 100 kPa)
it has not been tested in boost and must be tuned to your application if turbo or

supercharged. To use this table, the “Boost Fuel Trim Table” should be configured to

provide twice as much fuel when the manifold pressure is twice as high and half the
fuel when the manifold pressure is half as high; this should help simplify the tuning

process for different vacuum and boost levels. Notice the values in the main “Fuel
Map” do not change above 100 kPa (0 psi boost), the fuel correction is being made by
the “Boost Fuel Trim Table.”
Note: the “Boost Fuel Trim Table” must be adjusted if a different MAP sensor is

installed or if the Load breakpoints are adjusted. The Boost Fuel Trim value should be
set to -90 at 10kPa, 0 at 100 kPa, +100 at 200 kPa, +200 at 300 kPa, etc…

• Wiring accessories to the EMS

Please follow this suggested wiring diagram when adding new accessories and
retaining original accessories such as UEGO gauges, MAP sensors, MAF sensors,
IAT sensors, or switches for use with the EMS. Note that wire polarity is not important
for the Air Temperature sensor.

AEM EMS P/N: 30-6053

C16

A7, A31, C7, C18, or D9

C19 or C28

C17

A7, A31, C7, C18, or D9

C19 or C28

A29

A7, A31, C7, C18, or D9

C25

A7, A31, C7, C18, or D9

O2 Sensor 1
Sensor Ground (tapped)

+5V Sensor Power (tapped)

MAP Signal

Sensor Ground (tapped)

+5V Sensor Power (tapped)

MAF Signal

Sensor Ground (tapped)

IAT Sensor

Sensor Ground (tapped)

Switched Input

A31

White (0-5V Analog + signal)

Switch 1

Ground

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Brown (Analog - signal)

Red (+5V Sensor Power)

Green (MAP Signal)

Black (Sensor Ground)

Red (+5V Sensor Power)

Black (Sensor Ground)

AEM UEGO

P/N: 30-5130

Pink (Switched +12V Powe r)

Red (+12V power, 5A fuse)

Black (Battery or chassis ground)

MAP Sensor

P/N: 30-2130-50

MAF Signal

MAF Sensor

Air Temperature Sensor

P/N: 30-2010

1) Install AEMTuner software onto your PC

The latest version of the AEMTuner software can be downloaded from the AEMTuner
section of the AEM Performance Electronics forums found at www.aemelectronics.com

Series 2 units are not supported by the older AEMPro tuning software.

2) Connect AEM adapter harness

a) Disconnect negative terminal from battery
b) Access the stock Engine Control Unit (ECU). The location of the ECU on the Honda

S2000 is behind the left side driver’s side kick panel.

Honda S2000

c) Remove kick panel that covers the original ECU and the plastic cover on the lower

driver’s side door sill. The door sill cover is held in with plastic clips as shown
below.

Remove sill cover Clips holding sill cover

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d)

Remove the clip that is hidden underneath the rubber sealing trim next to the
dashboard and the clip for the plastic cover over the stock ECU using a plastic pry
tool to avoid scratching the paint and plastic cover.

e)

Remove the carpeting that runs along the lower driver’s side door sill to place the
wiring harness provided. Next, remove the two screws holding the plastic cover
behind the driver’s seat to place the EMS in the area behind the seat.

Remove clip Remove clip

Remove carpet covering harness Remove screw holding plastic cover

f)

Tap pin 3 on the red/blue TPS wire on the stock wiring harness using the provided
wire-tap. It is located on the white 6-pin connector near the stock ECU shown
below.

Tap pin 3 (red/blue wire) on 6-pin connector

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g)

A

How to use provided wire taps:

Run harness TPS wire through Place vehicle wire in tap

Screw in tap onto vehicle wire Place harness TPS wire as shown

Screw TPS wire into tap

h)

Carefully disconnect the wiring harness from the ECU. Avoid excessive stress or
pulling on the wires, as this may damage the wiring harness. All connectors must
be removed without damage to work properly with the AEM ECU. Do not cut any
of the wires in the factory wiring harness to remove them. Next to the stock ECU
on the stock wiring harness, the A and B connectors should be routed underneath
the D and E connectors to make them easier to install.

B

E

D

Carefully remove ECU connectors Reroute connectors

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