Hey GPers, I have a late model 2008 Gp SE. I want to build the hell out of this car but at the moment i am held up by the lack of a tune. Now, I have been all over this site and two others including GPONA with all the same results, such a people telling me about getting a new pcm with a tune that wont communicate with the late model cam buss. Ive tried will overkill and to the point of even in a full conversation with will about this but no such luck. Does anyone have any ideas how to tune the late model 2008 Ac delco pcm's?