Reviewed By David B (Lockport, NY) Reviewed for a 2009 Hummer H3 —3/30/2015 12:08 PM
Saw a 30 mile increase with the first tank of fuel...it will pay for itself in 6 months...better fuel economy with greater performance!!!
Reviewed By Christopher W (Troy, MO) Reviewed for a 2007 Hummer H2 —3/5/2015 11:00 PM
Installation wasnt as easy as stated, had to trim my "factory off road cover". But once that was done, this unit woke up my 6.0 LQ4. Had it for a while now, only bumped mpg by 1 gallon,,,, but worth it! Especially when I show other H2 drivers my readings!
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.