Not sure which 2005 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:
"Superchips have never disappointed me yet; my 4th product, and 1st Cortex. What made the Cortex so much better; large display and advanced tuning options. I went from the 87 tune to the 91 when gas went down, I also had to tune for new 38" tires. The options are unlimited. Bonus was a 6/10ths mpg gain." —Thomas F from Maumelle, AR bought a Superchips Cortex Programmer for a 2005 Hummer H2, 6.0L V8.