Best MPG #'s turning 37's or larger

[08strokinfx4]

Just wondering whos getting what turning bigger wheels and tires.

[lordzoll]

Originally Posted by 08strokinfx4

Just wondering whos getting what turning bigger wheels and tires.

I've got an F250, 6" Procomp lift, 20" Badlands wheels and 37" Procomp Extreme A/T, running the 210hp tune.

Hand calculated, my first tank I got 15.5 mixed. That was taking it easy most of the time, but really getting on it hard every other day or so.

I'm guessing I'm getting around 19 hwy. I'll know for certain after the 4th of July weekend as i'm taking a trip.

[Pahrump]

I took a 100 mile highway trip yesterday...filling up when leaving, and filling up when I got back.

Using the % that my speedo/meter is off cause of my 38" tires....and then using the GPS to get real miles driven...my dash meter was only .4mpg off..

It said 18.6, and I figured long hand 18.2


This is with the Spartan tuner on the 250+ tune.
Pretty damn good!

[etalian]

I know that Spartan makes a stock tune where they just turn off regen. So if you had the DPF delete and regen turned off with stock timing, afr, etc. would you get the same mpg's? Or do the higher hp tuners get better fuel economy?