Bully Dog 41105 Pre-Programmed 4 Position Chip with Rotary Switch (4 Bank) (Non-CARB Compliant) Simple and effective way to tune your vehicle for fuel mileage and power Fits ford 7.3l Power stroke '94-'97 with automatic transmission Using power levels, 30-125 horsepower/torque gains are possible Top level adjusts for high idle Sct custom tuning can be loaded by an SCT custom tuning dealer