I just read an article in the Jeep magazine about Mileage decreases with jeep lifting, tires and such. They buy a bunch of stuff and at the end they really accomplished nothing. They get the well standard 17-18 MPG. I get that with bigger tires (30x9.5 on their rig). Granted they have 197,000+ miles on their rig but I expect a little more substance from an article. Seriously, You have a part one, spend roughly $300 and no increase? Whatever... Can't wait for part 2!
2001 XJ 4.0 Auto 231 SYE 31-10.50-15 BFG AT 3" skyjacker lift.