RGibbs

I Know there are tons of threads out there but everybody has different circumstances. so what if you were in the worst of the worst situation and had a 4.5" lift and 31" tires where do you start? Exhaust? Injectors? I have no idea.

Please don't be a dick. I'm just trying to learn.

Humbywumby

well i have a 4.5 inch lift on 33's. i got like 1.5 mpg from swapping to neon injectors a month ago and it was $10 for the injectors at the junkyard it also idles smoother. it was worth $10

NorCalJeep

clean your injectors, basic tune up, baby it wherever you go. I get about 8mpg wherever i go..lol no joke. It sucks, but i can't figure out the problem.

Power73

heavy shoes? haha just kidding i havent even checked what i get yet but ive hearding swapping injectors is a good upgrade and i plan to soon

AoA

I gert your mileage with 7" and 33's! how does that work

mr white

What's your current mileage?

twistedunibody01

I get about 16 mpg with 4.5 in of lift and 33s . I do regular matience all the time and my 4.0 has a easy time turning the tires even thought I'm not geared. My jeep started out an SE model 2wd and everything pretty much factory except ford injectors newer intake mAnafold on a 96 and a Chevy fuel pump wired in place of the jeeps fuel pump and now it's 4x4 and far from SE now but still I get about 16 mpg.

Driftunit

im gonna have to get in here too lol. your exhaust might be pinched, mine was. i fixed my pinch, ported my throttle body, made an air intake, and added 93 ford f250 orange 19lb fuel injectors. all that helped me by roughly 4 mpg i went from 10 to 14. then i ditched the 35s and went with 32s and that helped some too but ive not checked it since

Tiller658

I believe I'm only getting about 10mpg and im all stock. What would be the best way to accurately test it?

iyzak the xj

reset your trip after you fill up, drive it next time you fill up divide the amount of gallons you used by the miles you drove

and if your stock getting that something is wrong i got 4.5" lift 33"tires 3.73 gears and i still get 13-14 and i have a pretty heavy foot no cruise

Driftunit

If its stock and doing that bad then you better start cleaning stuff or workin on your math lol. Get plugs, all filters and clean throttle body, check tire pressure.

Usafmikejr

How difficult was it for you to switch to the f250 fuel injectors and how much did it cost for them?

Driftunit

it was a very easy job. a cave man could do it. i think there is 4 bolts holding on the fuel rail then there are a few holding the throttle cable thing on then you just pull the rail right off. its kinda tight so it takes some tugging. plus you gotta take the cap off the pressure valve which is also easy, you can do it with a screwdriver. basically like if you were letting the air out of a tire, its the same kinda mechanism.

as far as prices they are gonna vary cause i got mine from a junkyard. they cost me 20 dollars. when i got them home i soaked them in a 50/50 purple power rubbing alcohol solution then scrubbed them with a tooth brush. (i used this solution cause its all i had lol) there are youtube videos on how to clean them better and test them.

these injectors are not the ideal injectors to go with but i saw some small gains and was pleased with the results. most people go with a dodge neon setup. i chose these cause i was tired of trying to figure out which was better and net searching so i said ef it and charted my own territory lol. to my surprise it worked like a charm. either will work fine but ideally you want neon injectors. with the neons you might also have to splice connectors. i didnt have to with the ones i got.

good luck and if you have anymore questions just ask, id love to help. also in the next post im gonna add a link to my thread on my injectors and the one to my build, there might be some other gas saver ideas in there i dont remember

Driftunit

Fuel injectors

https://www.cherokeeforum.com/f67/di...or-mod-147802/

Build

https://www.cherokeeforum.com/f46/je...nd-2-a-140615/

motorcharge

Seafoam the gas and vaccum every other or every third oil change. Tune ups as needed, don't carry the extra crap around with you all the time, keep the tires aired up, ect, ect. Keeping your mpg up on an XJ is basic, there's not much in the way of performance mods that you can do.

I keep up basic maintenance and on 32 m/ts im getting 14 mpg or so around town and I drive with a lead foot.