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Get guys I have a 2008 f350 crew cab long box 6.4 with a 8" lift and 37" toyos. I'm going to be doing some serious upgrades to her this week including the following: banks techni cooler system, spartan tuner, egr/ dpf deletes, banks double shot water/meth injection, 100hp injectors, fass 150 system, batmowheels in both turbos. What kind of mpg should I be excepting? I usually get 15-17 mpg going 120 km/h also what are some better gears to run with the 37's?