When I test drove some Rams I noticed that 2nd gear had a bit of lug (for lack of a better term), the 3.92's take care of that. I had my 2012 brought to OH from IL because we had a list of options and colors that we could not find locally, not what I really wanted to do (let someone else put the first 300 miles on my new truck) but when we picked it up the avg fuel economy was 17.9 mpg. The remote start kills the fuel economy more than the 3.92's. Plus you get a little more zoom at the stoplight or on ramp.