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2012 GMC Sierra Performance Monitors

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Latest Customer Reviews

DiabloSport inTune i2 Tuner Reviews


Works great

Reviewed By Kevan C (Hagerstown, MD) Reviewed for a 2012 GMC Sierra —7/5/2017 2:02 PM

Bought a pre-owned Sierra 1500 with the Vortec 6200 where the previous "computer" calculated MPG was 10.2 average. I cleared the computer, installed the MPG default tune with firm shift. With 2 tanks of regular 87 octane I now get overall "computer" average of 16.7. I will hand calculate at next fill-up.

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Edge Evolution CTS2 Programmer Reviews


Easy to install simple to use

Reviewed By james b (Ashville, AL) Reviewed for a 2012 GMC Sierra —6/27/2016 2:49 AM

Haven't seen a major power difference but has definitely improved fuel economy. Only problem I've had with it is it has froze up on me twice.

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Bully Dog GT Platinum Tuner (49-State Legal) Reviews


BULLY DOG

Reviewed By JON L (WILLISTON, ND) Reviewed for a 2012 GMC Sierra —2/9/2013 8:51 AM

NOTICED MORE TOP END, SMOOTHER SHIFT AT HIGH SPEEDS,NOT MUCH FOR MPG THANKS SHANNA

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