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Newbie
Joined: Feb 2010
Posts: 1
Likes: 0
From: Tennessee
Year: 1993
Model: Cherokee
Engine: 4.0 HO
Well I just bought my first Cherokee. I've always been a diesel guy but I'm gonna give this a try. I've gotten used to all kinds of power out of my old Cummins diesel. My 93 Cherokee just ain't quite got the pep. What's my best options? I don't want to spend tons of money. First thoughts were throttle body spacer and cold air intake....am I on the right path?
CF Veteran
Joined: Dec 2008
Posts: 1,533
Likes: 0
From: eaton ohio
Year: 93
Model: Cherokee
Engine: 4.0
get a 98+ intake manifold get a bored throttle body and make sure you bore out the manifold also, cold air intake for sure and exhaust too other than stroking it thats about it, or drop a 350 in it
CF Veteran

Joined: Sep 2009
Posts: 3,612
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From: West Valley
Year: 1998
Model: Cherokee (XJ)
Engine: 4.0
Your going to have a hard transformation going from a cummins to an XJ. Theres just so much you can get out of the diesel engines that your poor Cherokee cannot deliver. Intake and exhaust will gain you a little, I've heard the TB spacers not good for much more than making your Jeep noisier. I've never read about anyone having any success with a chip. Like the above post mentioned, short of dropping in a V8 your horsepower increases are limited. The XJ is a spunky little straight 6, but it's not really in the same league as a tweaked diesel. There are no 100 HP gains.


