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Katy Performance Chips

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Latest Customer Reviews

Hypertech Speedometer Calibrator Reviews


Reviewed By Kerry D (WHITEFISH, MT) Reviewed for a 2006 Chevy Silverado —7/22/2014 5:11 AM

Very satisfied. The Hypertech Speedometer Calibrator arrived quickly and was very easy to use. The instructions were clear and walked me through the programming process smoothly. I tracked my speedometer accuracy with my GPS and before calibrating it it was off 15%, which meant I was traveling 69 mph when my speedometer dispayed 60 mph. After programming with the Hypertech, the speedometer is spot-on. I can also easily reprogram when I install my smaller diameter winter tires.

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Hypertech Max Energy Programmer Reviews

Easy to use and install

Reviewed By Earl M (SAINT AMANT, LA) Reviewed for a 2015 GMC Sierra —7/18/2014 2:58 AM

I was able to change my tire size and add plenty power

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Hypertech Max Energy Programmer Reviews

Great Programmer: Will disable AFM!

Reviewed By Eddie L (Burnsville, NC) Reviewed for a 2010 Chevy Silverado —7/17/2014 6:55 PM

I bought this to turn off the AFM (Active Fuel Management). This fit the bill and then some. I want to tinker around with the other options later. If you want to turn off AFM, buy this one. This was the only one that I found on this site that will do this. I originally bought a Diablo programmer and found out after I got it that it would not turn off AFM. I was able to return it and get the Hypertech at a reduced price. Very pleased

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