Reviewed By Charles U (Saint Peter, MN) Reviewed for a
—2/8/2016 12:15 PM
Easy, took just a few minutes to program and what a difference it made in acceleration! I haven't checked the mileage, but it doesn't matter much.
Reviewed By Brian M (MCHENRY, IL) Reviewed for a
—1/22/2016 5:46 AM
The Hypertech Speedometer Calibrator worked perfectly on my 2015 Ram. I have 37" tires, and was able to adjust for the increased size. Speedo is now accurate.