To GTB or not to
AO Silver Member
Join Date: Nov 2007
This is not an easy modification...
1.9 ECU is different to 2.4 ECU, so you cant copy map of 2.4 into 1.9. There are only 4 injector drivers in the 1.9 ECU. It will never work on 2.4 engine.
There is also a problem with compatibility of 156 ECU with GT body computer.
Wiring on GT is completely different to 156, so you will have hard time convincing 156 ECU to work with GT. I doubt it is possible.
Maybe if you somehow managed to take CODE key module from 156 and mount it into GT, and then bypass GTs body computer...
BTW, when you connected 156 ECU into GT. What did you do with key codes? Which keys did you use? Or did you make ECU virgin?
First problem you have is to get key code module from GT to communicate with 156 ECU. Second step is CAN bus communication. But this is optional, engine should work without CAN communication to body computer.