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GMC Sierra Performance Chips & Programmers

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Latest Customer Reviews

DiabloSport inTune i2 Tuner Reviews


Just what the Dr. Ordered

Reviewed By scott w (Edmond, OK) Reviewed for a 2009 GMC Sierra —9/7/2017 8:41 PM

I needed the Diablosport tuner to turn off my obnoxious AFM, and it did as promised. It also delivered harder shifts and more power even in the mildest tune. The surprise was that my Sierra now has an extra 30 minutes of highway range due to more MPG.

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Superchips Flashpaq F5 Tuner Reviews


Meredith

Reviewed By Richard M (Sisters, OR) Reviewed for a 2016 GMC Sierra —8/24/2017 11:35 AM

A little slow to upload new desired Tune.

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Hypertech Max Energy 2.0 Programmer Reviews


2014 GMC OIL SAVER

Reviewed By George C (ROANOKE RAPIDS, NC) Reviewed for a 2014 GMC Sierra —5/24/2017 7:40 AM

I bought the Max 2.0 because other reviews had said their trucks had stopped using oil when the 4cyl program had been turned off. I have run this program now for close to a thousand miles and haven't used any oil with the engine running on 8 cyl all the time. Gas mileage has remained about the same as before, I haven't noticed any problems with the Max 2.0 programmer. My 2014 GMC sierra has a lot more horse power running this programmer .

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