The Most Powerful Tuning You Can Buy! The Max Energy Power Programmer extracts every bit of energy possible out of every molecule of fuel giving you more mpg at part throttle and more power at wide open throttle. All this and more... Only from Hypertech. Adjustable features depend on year, make, and model of vehicle. Vehicle specific features are listed on dyno graphs. -Raises Top Speed Limiter -Allows the vehicle's top speed to be matched to the speed rating of high-performance tires. Learn More » Premium & Regular Fuel Power Tuning -Lets you choose optimized tuning for 87 octane or 93 octane fuel Learn More » --Raises Engine RPM "Rev" Limiter -Extends the engine's RPM range for a wider power band Learn More » Reads, Displays and Clears Diagnostic Trouble Codes (DTC’s) -The Diagnostics program reads, explains, and clears diagnostic trouble codes (DTC's). Optimizes shift points by speed and RPM for maximum acceleration