Originally Posted by SouthTexasDiesel
That's some impressive mileage for a F-450, congrats on that. What tune have you been running?
I had been running the 1.22 R&D prior to getting the 1.26 about a week ago. I was getting great mileage with the 1.22 R&D but the shifting was pretty bad and the ďP2263Ē code every time I drove the truck was getting old. I like the 1.26, seems to be a really good tune and will make the wait for Ericís full custom tune a little bit easier.