I'm running IDP street tune, no lift kit, stock sized tires and on the average about 16-18 mpg. Hand calculated, every tank. If I beat on it like a pizzed of teenager I will get under 16. I try to keep it under 10 pounds of boost for my best mileage.
15.31 MPG on 07 with afe intake, mbrp 4" exhaust, 37/12.50R20's 6 inch lift, ccsb fx4 KR. Thought that's pretty good. I drive mostly open roads so it's like highway. Only have to stop 2x in my 46 mile one way trip to work.
Being nice to mine i get 13-14mpg, i did a 5 gal test while racing a few times and it started to run out at 23 miles on the trip meter. which is a scary 4.6 mpg. needles to say i havn't done that since. stock tires with 4:10 gear ratio. i miss my obs getting 17-18.
Normally i get 15-16 on highway at 75mph... this last trip from Florida to Shrevport LA, 12-14... suxs... 2" lift and 33 equivelant on 20" rims. Mostly stock. I can tell a hugh difference when i change my fuel filters..18-19 at 75mph
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