just recently chipped another P28, Same as I alway do, come to find out it was an Auto ecu, Now I've heard multiple sinario's where it dose and dose not matter, I have been searching the internet and have found no real conclusion, Had anyone here ever had any luck doing this, Or can you confirm that this can/cant be done? Im running uberdata by the way.

 

make a rom for your own car and try it out. doesnt hurt.