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GMC Sierra aFe Performance Chips

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Latest Customer Reviews

Hypertech Max Energy Programmer Reviews


I'm not happy with my Hypertech Max Energy Progammer.

Reviewed By Kent Q (Thornton, CO) Reviewed for a 2014 GMC Sierra —2/2/2016 5:51 PM

Truck doesn't run any better than it did, before or after the programmer installed.

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TruXP Xtune Performance Tuner Reviews


works great

Reviewed By Jim F (PHILPOT, KY) Reviewed for a 2010 GMC Sierra —1/27/2016 9:54 AM

Purchased this to get rid of AFM. It was on sale and about the same price as the thing that just plugs into the port to just get rid of AFM. The Xtune can disable AFM along with most features of more expensive tuners. The mileage tune was installed and couldn't be happier with the results. I would recommend this tuner.

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Hypertech Max Energy 2.0 Programmer Reviews


Disappointing-2011 GMC Sierra 1500 SLT 5.3L

Reviewed By James C (SPRINGFIELD, MO) Reviewed for a 2011 GMC Sierra —1/20/2016 2:33 PM

Very little, if any change in power in normal driving. I have tried both 87 and 91 octane tunes with appropriate fuel. Same with gas mileage, maybe a 0.2 to 0.4 tenths increase. Definitely not the 16 and 28 HP gains promised.

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