Chevy Duramax Fuel mileage
I am looking for an honest answer from actual campers. I am considering buying a used 2005-2008 Chevy 2500 w/Duramax with a Alison Tranny to tow a 10,000 - 11,000 Fifth Wheel. Those of you that have a...
Forum Discussion
pressure_welder wrote:
I have a 2012 denali dually dmax/allison. Love it to death, before i did the full H&S delete w/ 4" dual exhaust i would average 15-17MPG max due to the regens, and about 9-10MPG towing. Did the full delete and no word of a lie got a hand calculated 24.6MPG highway on a night drive with zero wind with the cruise set at 100km/h so that was a picture perfect "ideal situation" but in a real world day to day i get about 18-20.
Are you worried about the full delete affecting your warranty? I would love to use a programmer but I would hate to do anything to void the 100k power train warranty. Also in AZ we have emissions testing and I wonder if it would have a negative impact on that?
