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 Garrett D (HALSTEAD, KS) Reviewed for a 2002 Ford F-150 —8/3/2015 1:50 PM
The programmer definitely looks good in my truck and does a great job with affecting transmission shift firmness. I would say that it does add a little power but not as much as I thought, but this could be due to my set of aftermarket ignition coils and plugs being high end. It does keep track of data and shows data better than expected , I might add.