Towing in 5th (keep it from going into 6th by using manual shift mode) and keeping speed below 70 gets me close to 11 consistently. Beyond that I think only options are DPF delete to get real mileage.Hey i just got a 2010,LMM 3500 HD,, pulling my 32 foot horse trailer i am getting 9MPG loaded,,i am wonder what i can do to it to get better MPG's Without messing with the warranty??? Any suggestions....Thanks
my father drievs easy and it said it went up to 19mpg5 mpg increase with just an intake???? is this even possible? was he driving the same when he calculated? im not saying your lieing, just this would be very hard...
Your dad is either full of sh*t or made a mistake.... You will most likely never even see a gain in mileage from an intake, our stock intakes actually fow very wellmy father drievs easy and it said it went up to 19mpg