well, it's pretty off topic, but I went and had some fun in the mud today
I always got free of the muds hold at around 3k rpm. anyway, back to the discussion.
Aside from doing tranny swaps and etc. I must ask what type of driving do you do? Highway? City? Back Country? All this will help determine what you should do.
If you drive in the city, you wanna probably forget the aero mods and things, and concentrate on lightening up as much as possible. get rid of those dead bodies and baseball bats! also, adding air in the tires offers less rolling resistance, therefore lessening the load your engine has to do. Running with the Jeep warm will help ALOT. Less rolling resistance because the tires are warmed, engine isn't running cold (using more fuel to warm it up when it's cold) the tranny fluid isnt really thick, wheel bearings aren't cold and therefore you go easier. Parking where you don't have to use reverse helps alot in FE as well, so park backward or pull through at the store while the engine is warm, so when it's cold, you don't have to back out. Parking in the shade when it's hot and the sun when it's cold to minimize the use of A/C and heat, and to help you keep cooler or warmer faster. Instrumentation helps too, because knowing what mileage your getting on each part of your daily drive can help maximize how you drive everyday. Changing your fluids to the lowest viscosity helps with engine and tranny resistance.
For highway, it's all about aero, and less rolling resistance. grille blocks dominate the scene, as well as underbelly trays, and low viscosity fluid helps lower your resistance as well. lightening weight helps too, but more for the city where your constantly stopping and going. Running warm helps too, and mostly all the tips for the city, helps for highway.
Needless to say, it helps to know this so we can concentrate on what you should do first instead of just guessing.
