So you guys are sayin' that the truck computer could be "tuned" to run alot better performance wise? I consider both of you (myduuster and ramit) to be my official guru's, so that is why I ask. I have an 03 truck set up, street&performance wiring harness, srt8 injectors, tti headerswith complete exhaust (x-pipe), billet spacers to run a car intake on the truck motor. Runs good in the garage, but should anything be done for when it finally hits the street this spring?