Putting a restriction in your airtube isn't going to help anything. A cai or exhaust may help mpg a little, but don't buy mods for that reason, you can buy a lot of gas for what they cost. I put on mods because I like them, I like the sound, better throttle response and so on. Better mpg would be just a side benifit. The 2 mods that did the most for mpg on my ranger were, the bama engine programer and swapping in synthetic fluids through out the whole powertrain. I went from 18/22 to 22/24 mpg. There'a a muffler out called the turbin muffler I believe it's called, thats uses some kind of tech to get more mpg and power. I read thier website once, sounded impressive. The factory does a good job of letting the engine breath these days, there is still alittle gain to be had, as the factory mufflers must be quiet and we don't care. I have found that shortie headers are about worthless as the factory exhaust manifolds flow verywell now. Long tube headers, now thats a different story, they will make some power.

any idea on whether the tow package will decrease your MPG's? my 05 has the tow and gets around 20 but my daughter's 03 does not have the tow a nd gets almost 25.

Since I dont own a KJ I aint a guru in what the hell the tow package is but Id assume it includes a tow hitch assembly . That would add more weight but it aint gonna be a significant difference...anyone fill me in on the KJ tow package deal? It dont come with bigger brakes too does it??

I'm not entirely sure, but I think it also comes with a heavy duty transmission cooler, power steering cooler, and a larger fan.

Lift fever? Can anyone say J.E.E.P.? Just Empty Every Pocket. It's an addiction. I know I've got lift fever since i got my KJ two months ago. Next thing you know you'll want a roof basket. Good luck with your new addiction (Is there such a thing as Jeeps Anonymous?). Welcome to the wonderful world of Jeep!