| Picture of MAP sensor, this is used "instead" of MAF sensor together with a GMC Syclone PROM to be able to control Fuel and spark up to 210kpa, 15 psi of boost | ![]() MAP Sensor |
Due to a diff memcal/ECM is used there is no need for the ESC module so a Jumper wire is placed in the connector along with a resistor to get it right | ![]() ESC Jumper |
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| To make a adapter harness between stock harness and "new" ECM a donator connector is needed | ![]() Connector |
Picture of donator connector with "repinned" harness | ![]() Repinned |
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| The adapter harness for use a 1227749 or a 1227730 ECM together with stock harness from a TPI -89 | ![]() Harness |
Ta be able to use P/H injectors with the 1227749ECM from a GMC syclone you must change injector drivers and sence resitors, picture showing stock ECM | ![]() Stock 1227749 |
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| Drivers and resistors removed | ![]() Removed |
New drivers and resistors in place | ![]() Modified |
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| A Jumper wire is added to be able to use 2+2 pins on the ECM to the Injectors to minimize the current through the pins | ![]() Inj. Jumper |
To scan the car you need a ALDL cable, I have made several 2-Transistor ALDL cables and have tested them with ECM852 and TTS Datamaster, click on picture for more detailed picture of the assemble | ![]() ALDL Cable |