I’m running on 35’s, 4” lift, speed calibrated no other tunes and get a 18-19 mpg. Do you get any tune installed?I’m averaging 18-20 a tank with a leveling kit and 35’s. I have not recalibrated my speedometer so I’m probably in the 20-24 range but I’m trying to keeep miles off the truck to milk the warranty clock also those calculations were pulling a 3000# enclosed trailer for 50-100 miles of the tank