[skyking]

320 miles today, all but 40 of it freeway @ 60 MPH. I had a ladder over the tailgate but I propped it up so it was horizontal at least.
24.27 MPG
This is the new baseline.
When I got the truck it was stuck at about 19, regearing it got to 22, and the slightly higher OD ratio and new cam got it to here.
Now I will try the airdam. I got the app torque going and that provides a very nice instant MPG and average that was closer than the overhead.
Slowmover, if you don't have torque and a bluetooth OBDII transmitter in your truck I suggest you try it.
Of particular note was percentage of load. One can look at that, at the instant MPG, and draw some conclusions from there. If you did that we could compare notes.