Power Programmer III 5.7L LT1/LT4 Engines Increasing horsepower and torque is as simple as pushing a button with Hypertechs Power Programmer III. You simply plug the Power Programmer into the underdash diagnostic plug answer a series of Yes/No questions.
FEATURES (depending on year, make, and model) Hypertech Power Tuning: Tunes the engine for maximum power and performance, plus potential gas mileage improvements.
Dual Fuel Tuning Lets you choose tuning for 87 octane or 93 octane fuel
Engine Rev Limiter Extends the engines RPM range for a wider power band
Cooling Fan On/Off Temperatures Permits use of low-temperature thermostat for cooler, denser intake charge and lower engine operating temperature
Transmission Shift Points Optimizes shift points by speed and RPM for maximum acceleration
Transmission Shift Firmness Firmer full-throttle gear changes for faster acceleration
Top-Speed Limiter Allows the vehicles top speed to be matched to the speed rating of high-performance tires
Speedometer/Odometer Correction Automatically corrects speedometer and odometer readings with non-stock tire sizes and/or non-stock rear-end gear ratios (accurate odometer readings are required by law)