Much improved power and mileage
I bought this to improve mileage. It did improve mileage about 5 mpg (average about 24 mpg), but only about 1-2 when towing (average 14.5 mpg). The mileage coach is helpful as are the many gauges. Although I have never used the performance settings, my throttle response and acceleration is greatly improved over stock.
2012 Ram 1500 5.7 HEMI
This programmer was easy to install and looks great. I didn't realize for my truck though you cannot calibrate your tire size, there is only one tune so you cannot pick from 3 like it said it had. I did notice a little bit of power gain and my mileage went to around 20-22 mpg on the highway which isn't bad for a lifted 4wd truck on 35's.