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 P (WARNER ROBINS, GA) Reviewed for a 2017 Chevy Equinox —12/1/2017 9:27 AM
The programming was easy. I turned off the AFM to test the claims of other reviews that actually increases MPG, that's BS. MPG actually dropped. However there is a nice increase of hp. The dyno rating are on Hypertech's site. I will be turning AFM back on though.