I have stock exaust except for flowmasters, i also have a CAI, underdrive pulleys, and gears. But they said i had to set it back to stock because the tuner was constantly "resetting" the computer or something like that. Said that the critical monitors where not ready to be checked or something of that nature. So i had to set it back to stock, then remove my CAI (so there where no codes thrown) then drive around to complete the "drive cycle" P1000 code. Then i went back and it passed. But my problem is, i want to install LT or a supercharger. But i dont know how i could set it back to stock or have it pass with a tuner on it? Any help or tips would really help me out!