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GMC Performance Monitors

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Latest Customer Reviews

DiabloSport inTune i2 Tuner Reviews


Made a real difference

Reviewed By Doug K (Grapevine, TX) Reviewed for a 2015 GMC Sierra —8/11/2016 3:54 AM

I installed on my 2015 Sierra made a real difference in how it drives and performance

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Edge Evolution CS2 Programmer Reviews


setting 3 economy

Reviewed By Jack D (MORGANTOWN, WV) Reviewed for a 2011 GMC Sierra —8/9/2016 5:50 AM

most of the people will buy this for more power but i got it for the economy mode is ask for you to use regular (usually 87 octane) so i had to run it on setting 2 until i filled up on 87. Am know running it on setting 3 but with both setting it changes the shift time from factory and with the mile coach it shows me around 23 mpg but it also account for costing with i can do a lot off in WV all and all if you by it sooner then latter it should save you money if you watch the mile coach

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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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