Hypertech 730129 In-Line Speedometer Calibrator Module 20-23 GM 6.6L Duramax L5P MISH-MMRC-11-FRD another component associated with the

another component associated with the shift selector is the Neutral Safety Back Up (NSBU) switch mounted on the selector shaft of the transmission

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0" mandrel-bent aluminum piping eliminates the restrictive stock resonator and improves flow by up to 55% over stock

support brackets and trim templates for a clean and professional looking installation

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Hypertech 730129 In-Line Speedometer Calibrator Module 20-23 GM 6.6L Duramax L5P MISH-MMRC-11-FRD another component associated with theGet accurate speedometer readouts and proper shifts with the Hypertech Speedometer Calibrator for your L5P Duramax. 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 height