best year 4.0
05-11-2013, 11:21 PM
#3
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
87 to 99
05-12-2013, 12:49 PM
#6
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
05-12-2013, 02:19 PM
#7
Herp Derp Jerp
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Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Might as well keep it AMC in a CJ! In my humble opinion, if you want the fancy PCM do it right and use OBD-II. But thats a pain. And, don't quote me on this, but methinks the Renix system responds better to modifications. Toss a 4.2 crank and rods in there with a later head (I think a bit better flow?), bored TB, header (plus of the later head) an somewhere in there you'll end up with an EGR delete and a nice bump in power. AX-15 will handle it just fine
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05-12-2013, 02:21 PM
#8
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Join Date: Aug 2011
Location: Prescott, Az
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Might as well keep it AMC in a CJ! In my humble opinion, if you want the fancy PCM do it right and use OBD-II. But thats a pain. And, don't quote me on this, but methinks the Renix system responds better to modifications. Toss a 4.2 crank and rods in there with a later head (I think a bit better flow?), bored TB, header (plus of the later head) an somewhere in there you'll end up with an EGR delete and a nice bump in power. AX-15 will handle it just fine
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