Hey Z, your driving situation sound identical to mine. When I first got my custom tunes from Bill I was running my summer wheels, which are 33's, and I saw now difference in my mpg. Now that I've put my stockers back on for winter I'm doing a little better. With the factory wheels and tire size back on, this truck is a real blast to drive and it's gonna' be hard to go back to the 33 x 20's
Honestly though, with a rig like yours who cares about mpg
