i know Im already starting to get the bug

 

teh average gain in mpg with a CAI and nice cat back exhaust system with a good flowing muffler like magnaflow will give you anywhere from a .5-1.5 mpg gain. But then again when you put that exhaust like me i cant keep my foot off the gas

 

hi fellow ramers my 02 qcsb 4x4 4.7 1500 gets 14/18 mpg my 05 2500/gets 12 mpg up hill or down hill . o its a hemi