Speedometer Calibrator

If you’ve installed tires that are larger or smaller than original equipment tires, or if you have installed a ring and pinion gear set with a different rear gear ratio, the Speedometer Calibrator allows you to re-program for correct speedometer and odometer readings, as well as correct part-throttle shifting. The vehicle’s computer calculates your vehicle’s speed based on the diameter of the stock tires. If you’ve installed taller or shorter tires, or changed the rear gear ratio, the vehicle’s computer doesn’t know how fast your vehicle is going. As a result, the automatic transmission may not shift correctly and the speedometer readings will not be accurate (as required by law).

Read & Clear Diagnostic Trouble Codes(DTCs)

If you get a “check engine” light or “service needed” message, the Speedometer Calibrator will allow you to read the code and gives you the ability to clear the code and turn the “check engine” light off. This allows owners to access information about the vehicle’s operation without having to purchase expensive diagnostic computers or scanners used by dealership techniciansYou can then make the necessary repairs to prevent the light from coming back on.

Return To Stock Or Change Option Settings

Hypertech’s Speedometer Calibrator downloads and saves the stock tuning program, then uploads your customized Speedometer Calibrator program. Before taking your vehicle into a dealership for service, always return the vehicle’s computer back to the factory programming. Once you have the vehicle back from the dealership, reinstall the Speedometer Calibrator Programming as before. The Speedometer Calibrator can only be used on one (1) vehicle at a time, so if you sell your vehicle or want to use it on a friend’s vehicle, simply return your vehicle to the stock program and you may then use the programmer on another vehicle that is covered in the same part number.