Performance Mods - Engine - 4.7 Liter V8
I installed the K & N kit about a two weeks ago. Before the install, I was getting around 14-15 city and 18-20 highway. After driving city for a week, I got around 11-12 MPG and just today got 17 MPG on the highway, wtf!. At worst, I figured I would get the same mpg, in hopes of increasing the...