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Hummer H3 Power Programmers & Performance Tuners

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Latest Customer Reviews

Hypertech Max Energy Programmer Reviews


Hypertech Max Energy Programmer for 2008 H3 Hummer 3.7L

Reviewed By Shawn J (CLOVIS, CA) Reviewed for a 2008 Hummer H3 —8/13/2014 11:57 PM

I wanted something that I could program myself instead of sending of my PMC to someone eles to program. I was able to change my tire size to compensate for the 33in tire I installed, also was able to change my shift point and shift firmness as well. It also came with two performance setting, an 87 and a 91 octane. I used the 87 octane in my 3.7 liter and I got a boost in performance and mileage as well. Which made me very happy.

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DiabloSport inTune i3 Tuner Reviews


Tuner

Reviewed By Artie M (Eden, NC) Reviewed for a 2018 Chevy Silverado —4/17/2018 1:58 AM

Does what it's supposed to do.

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DiabloSport Predator P2 Tuner Reviews


Finally, Tuned 2013 GMC

Reviewed By RICHARD K (AUBURN, WA) Reviewed for a 2013 GMC Sierra —4/10/2018 2:00 PM

Months of reading AA Forums and others, I went with predator p2, the instruction manual, was step by step, The down load took minutes to do from my pcm,I fully charged my battery prior to,And no power to anything else,I plugged in the P2, Followed directions and chose 87 oct performance tune,AFM OFF (YAAAAH), AND Diablo trans tune and speed limiter off,My gmc 5.3 now starts and runs better, Accelerates (no pause) with more power,Trans shifts are firm,(No soft or hunting shifts), Im happy.

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