Increase MPG
I have a 2014 GMC Sierra 2500HD with the 6.0 gas burner. I have been looking at computer programmers and air intakes. Has anyone done any of these mods and did it increase your MPG any?
Forum Discussion
chevor wrote:
Drive slower, and highway tires aired way up.
so running a $250 tire at 80 pounds 24/7 is your way of saving money?
