ACCEL's SuperTuner boosts power across your engine's entire rpm range. You want noticeably better fuel mileage at partial throttle and more power than you've ever had at wide-open throttle? The SuperTuner gives it to you. Want the security and peace of mind of a 2-year limited warranty? The SuperTuner handles that, too. How about instant throttle response, firmer shifts when you're towing a trailer, and a whole host of user-controlled features? If you have a GM, Ford, or Chrysler vehicle, ACCEL's SuperTuner does all that, too - and for a lot less than you'd probably think.