Hi,
I currently have a Golf 4 GTI with an ARZ ECU that I want to swap to an AUM ECU in order to install a wideband sensor.
I already have the "Wideband ECU Conversion Harness" kit, but I was wondering if it is possible to swap the ECU while keeping the key code or if I am required to do an immo off?
I am on immobilizer 2 and I believe the AUM is on immobilizer 3, I think it is impossible but maybe you have some info I don't have (I hope).
Thanks in advance.
I know that the 2001 aww engine code 032DL is wideband and immo 2, you should be able to cross flash the 032dl file and copy your eeprom from the arz and that should work without a problem.