Revolutionary handheld tuner quickly and easily reprograms your vehicle for more power across the entire rpm range! 50 State Legal!REPLACES PREVIOUS SUPERTUNERS 49501, 49502 and 49503This simple single-touch tuner can optimize gasoline and diesel engines for the best performance and fuel efficiency. Its also capable of downloading and storing one stock tune before the power tune is uploaded. Plus its 50 state legal. All vehicle applications contain E.O. numbers from the state of California. The new ACCEL SuperTuner covers GM, Ford, Dodge, and Ram with a single SKU. See Specific Applications Below