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Ford F-350 Speedometer Calibrators

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Hypertech Speedometer Calibrator Reviews

A Great Fix for Ford Calibration Issues

Reviewed By Chris M (Conroe, TX) Reviewed for a 2015 Ford F-350 —3/13/2015 6:47 AM

I have a 2015 Ford F350 that I changed the tire size on, went to a 295/75R20. The change actually affected my navigation to the point of being worthless. I'm told that Ford engineers designed the GPS to use dead-reckoning in conjunction with satellite, a change in tire size throws your location for a loop. This system not only put my MPH dead on, it also fixed my Nav. issues. I would also recommend leaving the data cable attached for easy future adjustments. Great product!

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