Not sure which 2008 Hummer H2 Performance Chips & Programmers are right for you? We have over 7429 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"I was averaging 12.1 mpg without any mods. After installing the superchips MPG quick download I could not believe I was actually getting 14.2 mpg with a best of 15.4 mpg . This is amazing since none of the three H2 Hummers I have owned ever got close to this with any other mods I have ever done. Sad thing is as soon as I installed a Volant cold air intake I actually lost all my mpg gain. I think I will throw away the Volant and go back to stock air intake." —Allan S from Victoria, TX bought a Superchips Flashpaq Tuner for a 2008 Hummer H2.