Hypertech's In-Line Speedometer Calibrator Module is a plug-and-play module that corrects the speedometer for non-stock tire sizes and/or non-stock rear gear ratios. This module is perfect for vehicles with computers that don't allow for tire and gear ratio correction, or to re-calibrate for tire and gear sizes outside the range of programmers.

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Emissions Certifications: Not for sale or use in California

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