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 Matthew B (San Diego, CA) Reviewed for a 2015 Toyota Tundra —4/18/2018 8:08 PM
I set the tuner for Towing, turned off the seatbelt chime and disabled the speed limiter. I am pleased with the much better throttle response and,after towing my travel trailer for a couple of hours, noticed better placed shifting while going up hills. Overall, I am happy with the tuner.