Hypertech 730125 In-Line Speedometer Calibrator Module 17-21 Ford 6.7L Powerstroke MISH-R2887-AT They made the Cummins gear

They made the Cummins gear remover out of pre-hard material instead of cheap cold rolled steel

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These breathable filter wraps add extra protection for your filter and engine when in wet weather

Bully Dog has a strong emphasis on quality

Hypertech 730125 In-Line Speedometer Calibrator Module 17-21 Ford 6.7L Powerstroke MISH-R2887-AT They made the Cummins gearGet accurate speedometer readouts and proper shifts with the Hypertech Speedometer Calibrator for your 6. 7L Powerstroke. Hypertech's In Line Speedometer Calibrator Module is a plug and play module that corrects the speedometer and odometer for non stock and or gear ratios. With the included USB cable, connect the Hypertech In Line Speedometer Calibrator to your PC and enter the new tire size and or rear gear ratio. There are no limitations to tire