AEM 30-6101 Series 2 Plug Play EMS Installation Instructions

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
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://www.aempower.com

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

Vehicle

Series I EMS

Series II EMS

1993-1997 Toyota Supra non-turbo

1101

6101

1993-1997 Lexus SC300 / GS300

1101

6101

Installation Instructions for:

EMS P/N 30-6101

1993-1997 Toyota Supra non-turbo

1993-1997 Lexus SC300/GS300

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

be used on public highways.

Note: Part number 30-6101 supersedes and replaces P/N 30-1101

Instruction Part Number: 10-6101 (instructions published Aug 2010)

ADVANCED ENGINE MANAGEMENT INC.

2205 126th Street Unit A Hawthorne, CA. 90250

Phone: [phone] Fax: [phone]

http://www.aemelectronics.com

 2010 Advanced Engine Management, Inc.

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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 the particular application. The AEM EMS differs
from all others in several ways. The EMS is a standalone system that completely replaces 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 without any jumper harnesses. There is
no need to modify your factory wiring harness and in most cases your car may be returned to
stock in a matter of minutes.

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\Toyota” in the AEMTuner
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.

This product is legal in California for racing vehicles only and should never be used on public highways.

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

1) Install AEMTuner software onto your PC

The latest version of the AEMTuner software can be downloaded from the ‘Current
AEMTuner Software & Discussion’ section of the AEM Performance Electronics forums.
Series 2 units are not supported by the older AEMPro tuning software.

2) Remove the Stock Engine Control Unit

a) Access the stock Engine Control Unit (ECU). The location of the ECU on the Supra is

behind the passenger side kick panel.

b) Carefully disconnect the wiring harness from the ECU. Avoid excessive stress or

pulling on the wires, as this may damage the wiring harness. Some factory ECUs use a
bolt to retain the factory connectors, and it must be removed before the harness can be
disconnected. There may be more than one connector, and they must all 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.

c) Remove the fasteners securing the ECU to the car body, and set them aside. Do not

destroy or discard the factory ECU, as it can be reinstalled easily for street use and
troubleshooting.

3) Install the AEM Engine Management System

a) Plug the factory wiring harness into the AEM EMS and position it so the wires are not

pulled tight or stressed in any manner. Secure the EMS with the provided Velcro
fasteners.

b) Plug the communications cable into the EMS and into your PC.
c) Turn the ignition on but do not attempt to start the engine.
d) At the time these instructions were written, new EMS units do not require USB drivers to

be installed to the PC.

e) With the AEMTuner software open, select ECU>>Upload Calibration to upload the

startup calibration file (.cal) that most closely matches the vehicle’s configuration to be

tuned. Check the Notes section of the calibration for more info about the vehicle it was
configured for. These files can be found in the following folder:

C:\Program Files\AEM\AEMTuner\Calibrations\Toyota\

f) Set the throttle range: Select Wizards>>Set Throttle Range and follow the on-screen

instructions. When finished, check that the ‘Throttle’ channel never indicates less than

0.2% or greater than 99.8%, this is considered a sensor error and may cause some
functions including idle feedback and acceleration fuel to operate incorrectly.

This product is legal in California for racing vehicles only and should never be used on public highways.

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4) Wiring Accessories to the EMS:

Please follow this suggested wiring diagram when adding accessories such as UEGO
gauges, MAP sensors, IAT sensors, or switches for use with the EMS. Signals marked

‘tapped’ should be spliced onto the existing wire without disconnecting the original

circuit. All other signals should intercept the wire, disconnecting the original circuit. Note
that wire polarity is not important for the Air Temperature sensor.

5) Ready to begin tuning the vehicle.

a) Before starting the engine, verify that the fuel pump runs for at least 2 seconds when

the key is turned on and there is sufficient pressure at the fuel rail.
If a MAP sensor is installed, check that the Engine Load indicates something near
atmospheric pressure (approximately 101kPa or 0 PSI at sea level) with the key on and

engine off. Press the throttle and verify that the ‘Throttle’ channel responds but the

Engine Load channel continues to measure atmospheric pressure correctly.

b) Start the engine and make whatever adjustments may be needed to sustain a safe and

reasonably smooth idle.
Verify the ignition timing: Select Wizards>>Ignition Timing Sync Wizard from the pull­down menu. Click the ‘Lock Ignition Timing’ checkbox and set the timing to a safe and
convenient value (for instance, 10 degrees BTDC). Use a timing light and compare the
physical timing (measured at the crankshaft pulley) vs the Ign Timing value indicated by
the EMS. Use the Sync Adjustment Increase/Decrease buttons to ensure the actual
timing on the crankshaft pulley matches the ‘Ign Timing’ channel indicated by the EMS.

c) Note: This calibration needs to be properly tuned before driving the vehicle. It is

intended for racing vehicles and may not operate smoothly at idle or part-throttle.
NEVER TUNE THE VEHICLE WHILE DRIVING

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This product is legal in California for racing vehicles only and should never be used on public highways.