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Old 12-09-2013, 11:24 AM   #1
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Question Exhaust with SOA conversion?

I purchased a 91 YJ that already had the SOA conversion done. It appears everything was done right. The one thing I hate about it is the exhaust. It has no Cat and dumps right after the muffler just before the rear axle. This makes it very loud inside the jeep.

The set up presents a two problems for me:
A) It's illegal where I live
B) My wife hates how loud it is to ride in

I'm new to Jeeps and am looking for some input. How do most people run exhaust on a YJ with SOA? Can you not just run it like the factory out the back with SOA?

I'd love to see how others have theirs set up. Thanks

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Old 12-09-2013, 05:57 PM   #2
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In most cases, yes, you can route the entire exhaust system just like stock unless there has been a passenger side anti-wrap bar added which may interfere with stock exhaust routing between the tcase skid & rear axle.

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Old 12-09-2013, 07:53 PM   #3
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In most cases, yes, you can route the entire exhaust system just like stock unless there has been a passenger side anti-wrap bar added which may interfere with stock exhaust routing between the tcase skid & rear axle.
Soa will not change how the exhaust is run. Actually it will give more room.
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Old 12-09-2013, 08:10 PM   #4
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Soa will not change how the exhaust is run. Actually it will give more room.
X2 Just get a new cat, a muffler of your choice ( i got a welded Thrush muffler) and a tail pipe ($28.00 from Autozone), some clamps and rubber hangers and you are set.I have about a $120 in my exhaust from the manifold to the rear bumper.The sound doesnt upset the wife.
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Old 12-09-2013, 09:12 PM   #5
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Originally Posted by Tom95YJ View Post
Soa will not change how the exhaust is run. Actually it will give more room.
Have you seen what happens to the exhaust routing when the anti-wrap bar is installed on the passenger side (like I mentioned earlier)?
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Old 12-09-2013, 09:21 PM   #6
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Have you seen what happens to the exhaust routing when the anti-wrap bar is installed on the passenger side (like I mentioned earlier)?
Nope because every soa Yj I've seen has always had the antiwrap bar on the driverside Which is where mine will be going once soa
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Old 12-09-2013, 10:01 PM   #7
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Ahh. I mentioned the possibility of having the exhaust routed differently because the OP did not mention which side (or if there even is one) an anti-wrap bar.

I have seen dozens of SOA rigs with the anti-wrap bar installed on the passenger side. Most do it that way because they believe the torque applied to the rear axle is "countered better" by having it mounted on the passenger side.

I have seen threads like this started over the years where folks tell the OP to route the exhaust normally. Then after numerous pages the OP finally tells folks that the anti-wrap bar is in the way.
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Old 12-09-2013, 11:28 PM   #8
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Thanks for the info. This is my first jeep and I didn't build it so I will have to check the location of a possible anti-warp bar.

The thing has a 2.5L in it. Why the PO thought it would be cool to dump the exhaust I have no idea.
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Old 12-10-2013, 05:30 AM   #9
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I've seen has always had the antiwrap bar on the driverside Which is where mine will be going once soa
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Old 12-10-2013, 07:59 AM   #10
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My anti wrap is on the drivers side. My exhaust is stock and ran all the way out the back.
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Old 12-10-2013, 01:11 PM   #11
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I had to cut the tailpipe out after I went SOA b/c I angled the shocks in with a shock bar. Easy fix at the time with a turn down but I want to find a way to put it closer to stock as the turn down drones way to much.

The original owner did it to make something fit or he just liked it that way.
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Old 12-11-2013, 09:53 PM   #12
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the 2.5l with aftermarket exhaust systems sound like honda civics lol
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Old 12-13-2013, 08:25 PM   #13
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the 2.5l with aftermarket exhaust systems sound like honda civics lol
Exactly why I feel like an idiot when I drive this around.
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Old 12-13-2013, 11:10 PM   #14
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You didn't say what state you are in but , if you were in Cali. , you would have gotten a smog test and would have found out then there was no cat . Then it would be up to the seller to have one installed . I do wonder how he was able to pass smog with no cat ?
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Old 12-14-2013, 02:59 AM   #15
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my jeep is SOA in the rear and my exhaust didn't get touched and its the stock one.
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Old 12-15-2013, 09:10 PM   #16
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I'm pretty sure it's a shock issue with an exhaust. Only thing I could see that would affect the exhaust. If you keep it in stock location than it shouldn't affect anything. If you angle at all than you might have to make some changes.
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Old 12-15-2013, 09:25 PM   #17
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Now I just need it to be above 15 degrees out so I can fix this.
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Old 12-15-2013, 09:43 PM   #18
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yeah the sound like subaru's lol and when i did my SOA in the rear i didn't have to touch my exhaust, it fit perfectly

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