Reviewed By RICHARD J (Parachute, CO) Reviewed for a 2005 GMC Savana —7/13/2014 9:25 PM
Big difference in power. I get 3 to 4 mpg more when using performance level.
Reviewed By Joseph R (Corpus Christi, TX) Reviewed for a 2014 Dodge Ram —12/13/2016 9:45 PM
Made a noticeable difference performance wise on my Ram 1500 hemi. Big increase in power in the lower to mid RPM range. Still a new product so waiting some more features to be released for my application.