Below Average Joe: Thanks for the link! So from what I gather, you either use a plog or you use the header?
Scottydoggs: Thanks! I was curious as to what was with the knock retard. I just hadn't put that acronym together. I know i will have to go over that post a few more times before I actually "get it".
GrandPrix06GT: Thats why I'm here. So far everyone has been great and I'm learning quite a bit. I didn't mean backing up any info into my computer. I was wondering if I could get any info on the car's computer from the obd2 adapter and torque app. Mostly I am trying to find out how to tell if there is an aftermarket computer in the car.
Travisgt2: Thanks for the confirmation on the tank size. Sure do feel the difference in gas tank size from the Bonneville to the GP. And I knew we would need an emissions test. I was just wondering if the vehicle would pass the test. I'm kind of guessing not. At least from the info you posted I think I have some time to get it fixed.. de-modded.. ?