I own a 2011 dually with a 6.7, 3.73 rear, 6 speed, and 4x4. It was pitiful until I did all the deletes, and straight piped it. I get between 16 and 18 driving empty(my driving style is some where between balls out, and grandma goin to sunday meeting) and get 10 towing HEAVY, and 12 with light stuff. The most miserable thing about them stock, is the torque management system thats there to save the clutch. Trying to take off under a heavy load is nearly impossible. The ability to turn that crap off is what lead me to a tuner, better mpg, and less stuff to go wrong is just a happy coincidence. The exhaust brake is a major help to. Long story short if your getting by comfortably with your hemi, I would keep it, if you need a little more go for the 6.7, but im almost positive you will not be happy with it in stock/warrantied form. I voided my warranty at 347 mi.! Thats how much the torque management SUCKS!
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Today's Featured Article - Madison's County - by Anthony West. Philip Madison has been a good friend of mine for quite some time. He has patiently suffered my incessant chit chat on the subject of tractors for longer than I care to remember, and on many occasions he has put himself out, dropped what ever it was he was doing, to come and lend a hand cranking handles, or loading a find onto a trailer. Although he himself has never actually owned or restored a tractor, he was always enthusiastic and always around helping with other peoples projects.
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