AEM 30-1100, Installation Instructions Manual

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Congratulations! You have just purchased the finest Engine Management system for your car at any
price!
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 an all new stand alone system, which 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. 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. The AEMPro software is configured to work with
the factory sensors and equipment, so that there is no need for expensive or hard to find sensors, making
replacement and repairs as simple as with an unmodified car. For stock and some slightly modified cars,
the AEMPro software will be preprogrammed with a set of base parameters, providing a starting point for
individual tuning. For more heavily modified cars, the EMS has many spare inputs and outputs allowing
the elimination of separate rev-limiters, boost controllers, nitrous controllers, and fuel computers. It will
also allow programmable control over all automatic transmission functions, and includes a configurable
onboard data logger capable of recording 512kb of information. Every EMS comes with all functions
installed and activated, and there are no expensive options or upgrades to be performed.
The installation of the AEM ECU on the 1991-1998 Toyota Supra uses the stock sensors and actuators.
The base map is automatically installed in the calibrations directory in the AEMPro directory on your
computer. It is named 1100.V1.00.CAL.
Full details of the test vehicle used to generate this map can be found in the files notes section. However,
while the base map is a good starting point and may save you considerable time and money, it will not
replace the need to tune your specific application. It is not intended to be driven aggressively. Ignoring
this can and will damage your engine.
The factory Supra traction control is not supported with the AEM EMS. No removal of components or
other action is required from the end user. The ignition control is converted to “wasted spark” with 3
drivers controlling the six factory coils. The 30-1100 EMS pin out and connector diagram is at the end of
this document .
Please visit the AEM EMS Tech Forum at http://www.aempower.com/bbs and register your EMS before
you start to use it. Make sure you enter your EMS serial number when you register as doing this grants
access to the calibration files. We always post the most current strategy release, PC Software and base
calibrations online. On the forum, you will find many helpful hints/tips to make your EMS perform it’s best.
Also, we may make available EMS maps for engines running speed density, larger turbo, etc…
Read and understand these instructions BEFORE attempting to install this product.
1)
Removing the Stock Engine Control Unit
a) Access the stock Engine Control Unit (ECU). The location of the ECU on the Toyota Supra is
under the passenger firewall carpet and has a black cover that is removed by 4 10 mm nuts.
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 ECU’s 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 it aside. Do not destroy or
discard the factory ECU, as it can be reinstalled easily for street use and troubleshooting.
d) Make sure any aftermarket electronics are COMPLETELY and properly removed before starting
the vehicle.
2)
Install the AEM Engine Management System.
a) Plug the factory wiring harness into the AEM ECU, and position it so that the wires are not pulled
tight or stressed. Secure it with the provided Velcro fasteners.
b) Plug the comms cable into the EMS and into your PC.
c) Turn your ignition on but do not attempt to start the engine.
d) Upload the base calibration file (.cal) that most closely matches your vehicle’s configuration.
(These files can be found in the AEMPro/Calibrations/Toyota folder on your computer’s hard
drive)
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