2010dually

Boy u guys are getting good mileage I have 2010 crew long box dually 410 gears auto full deletes running level 1 tune empty on hwy I get 16 town I get 12 to 13

6speedcowboy

My 2011 with the common modifications averages around 18 mpg with mixed driving. If I make a long highway trip and keep speed around 65 mph it gets up around 24 mpg. All hand calculated mileage running on stock tires.