Became a believer in removing AFM

2014 Silverado, 5.3, 4x4, double cab, 2" lift, 285/65 18 tires, removed airdam

I was running 13.8mpg, installed the Diablo flextune and disabled AFM, 3 days later I'm running 15.9mpg now!

Not sure if it was the tune itself or disabling the AFM. I notice the truck holds gears longer, and without waiting for the AFM to de-activate it never feels like it has a dead spot. Not to mention the truck feels so much different off the line. I've stomped on it a couple times on the highway as well as in town.

It also sounds better and has me considering going back to a louder muffler than the Dynomax Super Turbo, maybe the Ultra Flo!