Originally Posted by blackmamba2012
i just lifted my 2012 1500 express 4 inches nitto trail grappler 35x12.5r20 with airintake and im getting 7 mpg city and 10 highway anyhelp to improve my mpg
Do you have any other mods?
As mentioned above a tuner will help you the most. A CAI and exhaust will help a little bit, but not very noticeably.