I didn't notice much difference
Reviewed By James H (FOUNTAIN HILLS, AZ) Reviewed for a 2012 Chevy Silverado —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.
Ford F250 6.4L programmer
Reviewed By Froilan s G (Hanalei, HI) Reviewed for a 2008 Ford F-250 —11/16/2014 10:11 AM
I like it so far but I only had it for a few weeks and so far I notice some benefits but curious to see the programmer in the long run. Two things that I think needs attention is for the location the brightness of the screen makes it hard to see at night on the left side when turning left, I have to cover the screen with my hand so the lighting doesn't distract me and so saying that the other draw back is cant tone down the brightness level.
Gas mileage versus performance
Reviewed By Richard B (MINONK, IL) —11/16/2014 9:27 AM
Was easy to install,performance is great,burns tires first 2 gears w/4wd truck,gas mileage not so good,dropped about 3+mpg down to about 13.7mpg,seems to be running real rich as black smoke out of tailpipe like a diesel when you floorboard it.was expecting better mileage and performance.