I have an 02 1500 with a tiny (4.7 magnum) enginge in it. I was getting about 15.5-16 on freeway. I lifted 6" and put 35s on and i dropped to 9.5-10. Put on a magnaflow 3 si/so cat back on it and went up to about 10.5-11. put a dual k&n filtered intake on and now im upt to about 12.5-13. next paycheck comes headers and a 4.56 rear, and ill let you know how that does

 

04 QC Hemi 4X4

Drop-in K&N
Airaid MIT
Air Ram Scoop
3 inch single cat back
Tonneau cover

11-12 MPG average pretty much any way I drive it. Ive Gotten better on long trips but it still averages out to 11-12.

$60-70 every 5-6 days sucks. I pay as much in fuel each month as my truck payment. I think Im going to buy a little beater to offset my fuel costs.

 

Before the turbo, I put on Flowmaster American Eagle exhaust and an Airaid intake. I didn't notice any increase in mpg.