going to do a quick thing on a 2005 Pontiac GTO today. but before I begin, I want to know if and how the vehicles calibration has been modified before coming here. The simplest way to do that is to use the compare feature in the HP tuner software. this is one of the most underutilized features by most novice and even some professional tuners. it can help you identify what has been done to the tune very quickly and allow you to target problem areas before just going into the tuning process blindl

Review: Modified 2006 Pontiac GTO