Why won't this fit my '89 - JeepForum.com
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post #1 of 2 Old 11-29-2014, 12:04 PM Thread Starter
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Rebel442's Avatar
1989 YJ Wrangler 
Join Date: Jul 2008
Location: Chicago
Posts: 738
Why won't this fit my '89

Your Force II system is only listed to fit the 4.0 YJ's, but why wouldn't it work on the older 4.2's? To the best of my knowledge the body tub and axle setups are all the same. Is it just a flange or hanger setup that's different? Would having an aftermarket cat(longer or shorter) fix some issues? I'm running a Borla header so pipe diameter is already not stock. Thanks for any help.

http://www.flowmastermufflers.com/?p...tegory=Exhaust Kits&kw=

It Wouldn't Be A Project If Everything Worked Right.
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post #2 of 2 Old 12-03-2014, 10:29 AM
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2000 TJ Wrangler 
Join Date: May 2014
Location: Santa Rosa
Posts: 313
This system was designed for use with the 4.0L HO engine. We also do not list this kit as fitting 1991-1995 2.5L YJ's. Although you may be able to modify this kit to work on your Jeep, it is not a "direct-fit" system, and it has not been engineered specifically for your engine.
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