Can anyone help please? ECU query? Hi new to the forum and new to audi ownership I have a mk3 ibiza cupra running garret gt2860rs and revo stage 3 file, engine code is AYP but have just bought a 1999 AUDI S3 with the APY engine well happy with the car.Im In the process of having the gt2860 etc took off the AYP ibiza block and put on to the APY block in the audi.My question is will the AYP ibiza stg3 ecu work in the audi? or am i going to have to have the file flashed to the new ecu? any advice apprecated Thanks.