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Unread 12-04-2007, 04:14 PM   #1
Registered User
1998 XJ Cherokee 
Join Date: Jul 2007
Location: Pennsylvania
Posts: 272
Jet Performance chip?

Jet Performance chip, Anyone on here have one installed on their Cherokee? Stage 1 or Stage 2? Types of gains to be expected: in performance and MPG.
Do you like it?

Well, since I already installed a Gale Banks Header, Gibson Cat-back exhaust, and an AFE Stage 2 intake, i think this would be a nice modification.

P.S. My jeep is at the body shop now. Should be back by Christmas. I'll post up some berfore and after shots. I should also have my 3.5" RE lift by then. I already have a set of Moab wheels with some 31" rubber in the garage

1998 Jeep Cherokee Limited Black
4.0L......AW4 Trans......NP231 SYE......DANA 30 in Front......Corp 8.25 in Rear
RE 3.5" SuperFlex, Bushwacker Flat Flares and 33" Goodyear Wrangler Duratracs

Black XJ on Moabs Club Member #2
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Unread 12-04-2007, 09:31 PM   #2
pro street jeep
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1985 XJ Cherokee 
Join Date: Apr 2006
Location: ocala,fl, fl
Posts: 295
i had a stage two on my 96 GC 4.0. i had better throttle and shifts. it helped pull my trailer better.
"prostreet xj cant be beat"
1985 2dr 2wd 454 smallblock chevy full tube chassis
now building "prostreetjeep II"
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Unread 12-05-2007, 07:23 AM   #3
Web Wheeler
2001 XJ Cherokee 
Join Date: Nov 2006
Posts: 1,320
I had a stage 1 on my Jeep (I wanted to use regular). I gained nothing from that combo, so I sold it. Oh, and I also have a Banks Header/ Afe Stage 2/ Magnaflow 2.5" Muffler+Cat.

Maybe the Jet Stage 2 will yield actual results (their dynos claim 10hp - PDF dyno link here), but personally I'm not about to run premium ALL the time for a mere 10hp
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Unread 12-05-2007, 10:31 AM   #4
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1991 XJ Cherokee 
Join Date: Nov 2007
Location: Southern Maryland
Posts: 1,365
I run premium all the time to keep my old engines clean. It's worth it to me.

Having said that, premium will also allow you to advance the timing a few degrees which will also yield more power. My suspicion is that is pretty much what the Stage 2 chip does.
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Unread 12-11-2007, 10:41 PM   #5
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1989 YJ Wrangler 
Join Date: Dec 2002
Location: NJ
Posts: 51
Stage 2. Run the suggested low temp thermostat with it. With a nice free flowing exhaust and intake, you'll really feel a difference as I did. I'm sure even the Stage 1(which can be run on a stock Jeep) is great. Chipping/tuning/flashing is the best bang for your buck.
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