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GMC Performance Monitors

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Latest Customer Reviews

DiabloSport inTune i2 Tuner Reviews


Works as advertised

Reviewed By Creighton C (Concord, GA) Reviewed for a 2015 GMC Sierra —5/31/2017 9:50 AM

Really woke up the 5.3L in my vehicle using the canned tune. I have the Borla catback system as well so turning off the AFM is a plus, and the transmission shift to firm helps as well. Documentation could be better to help explain parameters for vehicles, etc. But overall I'm pleased and would recommend it.

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Edge Evolution CTS2 Programmer Reviews


Best investment

Reviewed By Andrew M (New Milford, CT) Reviewed for a 2017 GMC Sierra —5/9/2017 4:20 PM

By far best mod done to my 2017 Sierra Denali 6.2, made throttle response so much crisper. Just having an issue with the performance tune, but edge has the best customer service so not worried

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Bully Dog GT Platinum Tuner (50-State Legal) Reviews


Works better than expected

Reviewed By Lee M (Bella Vista, CA) Reviewed for a 2010 GMC Sierra —3/13/2017 10:31 PM

Adds good power tons of torque and helps gas mileage a noticable amount. Definitely would recommend

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