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.
Easy to use, but no impressed so far.
I put the mileage program into my pickup, but haven't noticed a difference yet, so I'm sort of disappointed so far. I am going to try a different program and see if it helps, but thought for sure I would see at least a couple MPG or better. It's easy to use and the instructions walk you through everything.