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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


Great product

Reviewed By Cristhian C (COACHELLA, CA) Reviewed for a 2015 Chevy Silverado —5/15/2018 8:11 AM

Really easy to use. Has everything you need.

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TruXP Xtune Plus Performance Tuner Reviews


Pleasantly surprised

Reviewed By drake l (Saint Paul, MN) Reviewed for a 2001 GMC Yukon —5/13/2018 4:19 PM

I was a little sceptical about buying this tuner because it was fairly inexpensive. After receiving it and trying it out I'm amazed how well it works for my 2001 denali. I tuner the mileage saver and so far I'm getting at least 2.5 miles to the gallon better. Can't wait to try the other functions..... If I were you I'd buy one

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