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22 Posts
I have the 6.4l and got an sct 5 tune deal and my mileage went from 10-11 in town to 14-15 in town and I just went to missouri and got 19.5 at 80 mph. My truck will smoke those 35 inch nitto trail grapplers is have, ill be interested in the 6.7 if they do a dpf delete!