Reviewed By RICHARD J (Parachute, CO) Reviewed for a
—7/13/2014 9:25 PM
Big difference in power. I get 3 to 4 mpg more when using performance level.
Reviewed By Olivia c (OKTAHA, OK) Reviewed for a
—3/17/2015 8:14 PM
Best ever well worth the money my truck runs great
Reviewed By Josh A (killeen, TX) Reviewed for a
—3/25/2015 8:23 PM
Easy to install and can see a huge difference in the performance in my duramax.