I didn't notice much difference
Reviewed By james h (FOUNTAIN HILLS, AZ) Reviewed for a
—11/17/2014 3:40 PM
Installed on 2012 Chev 2500HD gas. a bit confusing on how to install download and what to/not to load. I'm still playing with it. it is not on the fly. takes 10-15 min to change program with fuse removal. about 10% better mileage (10% of 11 mpg is only 1 mpg)I was hoping for at least 15mpg. display small hard to see, I like how I can change the display to what I want to see. Driving coach a neat toy. I have had programmers on diesels and there is a big advantage. Not so for gas.