In 15k pre tuned miles I had ONE gas tank over 18 mpg and it was 18.1 using ethanol free fuel. In 6k of tuned miles EVERY tank is over 18 using 10% ethanol fuel.
2011 Tri Coat metallic Platinum F-150 4x4 Ecoboost. MPT/Livernois/Unleashed tuned, ATP intercooler, AFE stg 1, Livernois catless DP and 4" custom exhaust
2014 Black Ram 2500 4x4 6.7 Laramie Limited