Hypertech 2005-2011 Toyota Tacoma Speedometer Calibrator 730107

Hypertech 2005-2011 Toyota Tacoma Speedometer Calibrator 730107. If you've installed tires that are larger or smaller (up to 50% 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). Using the USB cable connect, the In-line Speedometer Calibrator Module to your PC and enter the new tire height and/or rear gear ratio. There are no limitations for increasing tire height or rear gear ratios. In a matter of minutes, you can accurately correct your speedometer and odometer readings.

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