Reviewed By JEFFREY P (Mission Viejo, CA) Reviewed for a 2003 Hummer H2 —8/21/2012 9:22 PM
This product was easy to use and has improved the shift points and horse power of my 2003 H2 HUMMER without any loss in MPG. I actually think it is saving me a few MPG on the 87 octane tune setting versus the factory setting. Non the less, it takes off faster and is less of a brick now without any adverse effects. That is a huge plus for a daily driven rig. I have more options to try for sure, but am so happy with the noticeable difference at the moment. Like butter on ice for now vs. before!