I have a different Air Filter at the time/ NOT A CAI/K&N full intake. Rest of the car stock... This is with 91 octane...This is the hightest we can buy in colorado... A/F ratio's were changed, timing was changed, and more. i did not do this myself. There is a local shop/tunner that basically works on GM high performance cars/trucks, vette's, F-bodys, GTO's, ect. I dont know about removing the TQ management. Do not know if that was done or not.