last year i went on a 350 mile trip got 16.8 on highway without blower added, this year been 200 miles so far and full tank of gas... tune needs more work

mods in sig changed
60lb injectors
8-9 psi on mp122

 

2wd and 373..weighed truck at 5700..i just got off vacation and pulled a camper about 400 miles and stayed out of boost most of the time and averaged about 7.5 mpg..\truck owned the trailer but made a lot of noise doing so lol...

 

In the city, I'm at a consistent 10.5mpg on E85 and 13 on 93 in the city. Picked up a little after a spark plug (br7ef at .035") and front O2 sensor change.

 

still getting 20 on the highway but down to 13-14 daily because I let my truck run about 40 min a day warming up for the winter and sitting in traffic / doing donughts kills my mileage.