My Car is completely Stock other then the 2.5" Thrush Turbo Mufflers and K&N air filter. I want to know what Hand Held Programmer works Better for my application. I wanna help the gas mileage even more because I am only getting about like 13.258 per gallon and not sure how much now with fixed exhaust. Please Help me out on which Hand Held Programmer Is Better Thanx. I also had both O2 sensors, tps, map, air idle control valve, air tube sensor,front Engine Mount and Tranny Mount, front and rear Brakes and Rotors, tune up will b Done again soon.