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GMC Sierra Power Programmers & Performance Tuners

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Latest Customer Reviews

Superchips Cortex Programmer Reviews


Sierra 1500 5.3L

Reviewed By Keneth S (Jonesville, LA) Reviewed for a 2013 GMC Sierra —12/23/2014 8:37 PM

Easy to use programs in minutes. I can tell A difference. I just program with the quick tunes

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DiabloSport inTune I-1000 Tuner Reviews


2014 Sierra 5.3

Reviewed By Ronald R (Boise, ID) Reviewed for a 2014 GMC Sierra —12/22/2014 7:25 AM

Truck is a lot more fun to drive now. Throttle is more responsive, holds gears longer under full throttle, and shifts do feel firmer. When getting on the gas after a turn, the truck seems to be in the right gear and accelerates better. Overall I am very happy with it.

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Range Active Fuel Management Disable Device Reviews


2011 GMC Sierra 1500

Reviewed By matthew h (GRAND COULEE, WA) Reviewed for a 2011 GMC Sierra —12/19/2014 5:26 AM

Range product works well. It was easy to install. The AFM was causing my truck to "learch" when stopped at slow speeds (engine shifting from 8 to 4 cyclinders). Also had a lot of burnt oil leaving black residue near the tailpipe. The common problems you see with the GMC FLEX Fuel design. This product fixed them all. I did loose 2 mpg 19to17. More instant power overall. Good product to purchase if you decide to keep the truck instead of sell or return for one without the AFM issues.

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