I have a 2001 camaro Z28 and, i took it to the track last night, ran 13.74 @ 103 Mph. As making passes i noticed some detonation i have figured out the problem for that. But as i was checking my computer after running scans on the car, i noticed that the TPS was only giving me 87% throttle at wide open throttle, anyone know what causes this?

 

I had to replace my TPS on my 01 SS, it failed and put up a code inexpensive and just 2 screws...

 

Check the throttle cable for proper adjustment.