Hey guys I just wanted to let you know that I know the best $450 you will spend on your GTO. It is on LS1 Edit. A guy I know in Dallas named Chris Robinson has been tuning LS1s for years with Edit. He knows his stuff, yesterday he was showing me timing tables he down loaded from my car and showing me how much timing the car had in its original program and it sucked. So in the next couple of days I will be getting my car tuned and I know others that have had their own cars tuned by him and let me tell you even stock cars run like they just picked up an additional 40lbs of tq. at the lower RPM stages. Oh yeah and that is where he tunes out of RPM in Lewisville. You Dallas guys know where that is. The Predator is a good product but can't do what LS1 Edit can.