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Hypertech’s In-line Speedometer Calibrator Module is an in-line module for correcting the speedometer and odometer for unlimited tire sizes and/or rear gear ratios. This module is perfect for Trucks and SUVs with computers that don’t allow for tire size and/or rear gear ratio correction or want to re-calibrate for tire sizes and/or rear gear ratios outside the range of programmers.
Using the USB cable connects the In-line Speedometer Calibrator Module for your Trucks, SUVs or Cars 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. Next, simply disconnect the factory connector to the instrument cluster (behind the dash), snap in the Speedometer Calibrator Module, reconnect the cluster, and you're done! In a matter of minutes, you can accurately correct your speedometer and odometer readings (as required by law).