I got 4.10's ax15 and 35's and love it for street and play... I never use 4hi though...

 

Injectors, are stock. I am going to check those this weekend. Fpr is from stroked jeeps. O2 sensor is brand new, and it is going into closed loop. Transmission is shifting fine, and locking up. Injectors are the only thing left to check, that I can think of.

 

Sounds like u dont have a problem at all to me... U may have a junk injecter but chances are it woukd spit and studder and run like crap...

Jeeps were never built for gas milage... Well until like 2008 lol

 

have you put a gauge on the rail yet? you have to set those regulators up with a gauge. it is the adjustable one right? then you should buy the map tweeker too...

 

im running 38s on 410s im getting around 15 no complaints here but being stick shift makes a big difference and in running ac 24/7 . 703 injectors seem to pick it up a little

 

703's and AC as well...

 

yes i dont lead foot either helps alot

 

35s are pigs...driving a lifted xj is like throwing a brick through the wind...

 

Fpr was turned up 3 pounds at the rail. This is what my engine builder said has always worked for him.

 

Uh... So u got a aftermarket pump or what? Cause u cant just "turn up" fuel pressure... Even if u did the regulator would fix that problem...

 

Yeah something isn't right. Even for a stroker, it should be getting more than 8mpg!
I'm running 3.07's on 32's 5th is almost useless on Freeway, and I average
15mpg. Thing is a dog.
Op with that newer motor, and proper tuning, you should be getting better
mileage.

 

Yes aftermarket walbro pump.

 

Yeah but hes running a higher rpm then you on the highway... Drinks more gas... Thats why 4.10 for him puts him back at almost stock power and gas milage... Right now hes got more power (from rpms) and less fuel milage... And u got less power and more gas milage... Well more then him... Your so fad behind in lack of power your gas sucks when excelerating...

3.55 and 33's with a 5 speed was about right for me... Back to stock power and almost stock speedo settings...

 

89 RENIX (stock 155k poorly maintained), AW4/3.55s/32x11.50 A/T here and I average about 14mpg around town, 16ish on the highway if I keep it under 65.......FWIW.

 

Woah woah. I have a 2000 XJ, with a cowl intake, and flowmaster exhaust, 3" lift with 31s...and I only get 12 mpg

This isn't fair