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GMC Sierra Speedometer Calibrators

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Latest Customer Reviews

Hypertech Speedometer Calibrator Reviews


recal speedometer

Reviewed By Eddie J (Harriman, TN) Reviewed for a 2007 GMC Sierra —8/6/2015 1:01 PM

product arrived in short time had to get update but tech support helped right away no problems. checked speed against GPS and distance markers shows to be right on. good product

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Superchips FlashCal F5 Calibration Tool Reviews


Incredible

Reviewed By Kenneth T (Glendale, AZ) Reviewed for a 2008 Jeep Wrangler —2/2/2018 8:43 PM

With barely any auto experience or skill. I installed in under 20 minutes. I noticed immediately that my rpms were lower, I had a 200 mile drive that day and on a full tank of gas I would normally return from my drive with my fuel nearly empty in my Jeep. The Superchip Flash Cal added another 80 to 100 miles to my tank. My odometer is more accurate now that my 35"tires are calibrated no more struggling up the hills as I climb up 4000 feet to northern Arizona. I'm so excited to have my Jeep run c

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