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 JP P (TUPELO, MS) Reviewed for a 2015 Chevy Camaro —7/5/2016 4:07 AM
Bout this for my 2015 SS Camaro l99 and it makes big difference when you have a cai and catback exhaust!! Feels like I gained close to 40 hp to the rear wheels and the throttle response is impressive and quick !!! Good job hypertech !! ????????