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
2014 Truck...don't even think about a programmer, different air filter, or changing the intake and exhaust...
or...you can kiss your warranty GOOD-BYE.
or...you can kiss your warranty GOOD-BYE.
