Ok well i have a 93 cherokee sport with 4L auto.

I just did tune up on it intake and axle back exhaust *both were needed* this is just my back up ride and i'd like better MPG if i can. should i do the mid pipe and cat now?

Would a differnt TB gain me any MPG? Somthing like an MSD system? I like working on her and keeping in good shape but also improving the milage.

no one at all?

no one at all?


what kind of mileage are you getting now? tire size? gears? lift? etc.....

what kind of mileage are you getting now? tire size? gears? lift? etc.....
14-22 mpg

mostly about 16-17 with the mixed driving.
its stock sized tires and stock 3:55s no lift all it has is the intake and axle back.

14-22 mpg

mostly about 16-17 with the mixed driving.
its stock sized tires and stock 3:55s no lift all it has is the intake and axle back.


if you've gotten 22 w/an automatic, i would say you can't get much better than that. Just keep it in tune, and you'll get the best possible!

ok cool thanks!
well any more work i could do to add some power without losing milage?

I was thinking the rest of the exhaust and T-body next.

Get 8mm plug wires from summitracing.com. tayler will work. we have that for our jeep.

Throttle body or mult-port injection?
how much of the intake have you done?
If it's throttle body, do you have a throttle body spacer?

Remove the venture on the intake hose. and cut out the opening on the front of the box. Thats what I did, helped with power and MPG

Hi Ace,

I'd agree with Ferg, 22 is pretty good...

If you haven't bored the throttle body yet, go ahead and do it. I did mine myself, it's a piece of cake to do. I also installed a spacer at the same time. Did see some improvement in mileage and power.

I did Paulsenior's mod. Bored out the front of the air filter box, and removed the plastic panel directly in front of the intake hole on the box. -poor man's cold air intake.
works good.
More horsepower and better gas mileage at the same time requires a later year model engine frankly. I don't know if they are available for a '93, but you might look into a performance chip.
the only drawback is they usually require higher octane gas to reap the performance. More power always equates to more $$$ one way or another.