i have a 2010 chevy 2500 dirty max, and i love mine, put a tuner in it and i get decent mpg even towing the race cars or the crawler or my buddys boat, i mean w/e
pobably helps that i did exhaust on it and manifold and some other things here and there, but non towing, i get right arround 26 on economy mode, when im not on the loud pedal