1991 Jeep Wrangler Exhaust Advice? - JeepForum.com

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post #1 of 26 Old 05-18-2010, 09:28 AM Thread Starter
DanielShearer
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1991 Jeep Wrangler Exhaust Advice?

Just bought my first jeep monday and we're picking it up tomarrow

So i'm looking at parts and I'd like to get an exhaust, but i'm budgeting myself to around 250 maybe alittle more if it comes to it.

I heard you guys were the experts and I need some advice on exhausts that have good sound and performance and are legal in most states for around 250 or 300.

Doesn't have to be full system. Or does it? idk lol, so any help i can get is great. Thanks

Dan




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post #2 of 26 Old 05-18-2010, 10:02 AM
rustywrangler
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Holy huge pics batman. does tinypic have a "forum or email" setting???


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post #3 of 26 Old 05-18-2010, 10:52 AM
4.7stroker
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There is little power to be gained from exhaust mods.
I would stick with a stock or near stock system only replacing stuff if it needs it.
You will spend plenty of money on your jeep when it breaks down.

Dwayne


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post #4 of 26 Old 05-18-2010, 11:13 AM
UltimatE
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post #5 of 26 Old 05-18-2010, 11:51 AM
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Is it leaking?

"Rusty" is a 2009 JK, "X", 6spd, 2.5" Rock Krawler, Fox shocks, 33x12.5x15 Duratracs, AR Baja 15x8, Tuffy console, PIAA Fogs, 4:56 gears which are too low for this tire size, JCR front bumper, Warn winch.
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post #6 of 26 Old 05-18-2010, 12:20 PM
Chris Aunchman
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I have been using "Vortex" mufflers on inlines and love the sound. I have experimented with tons of muflers on inlines, I always hate th high pitch or even angry beehive sound.....Vortex is a nice deep mellow tone. They are made by Cherry Bomb, you can get them in Summit. They use a flow diverter and packing to get there sound. And no they aren't the cheapo straight pipe red cherry bomb ones. They are black fully welded not to many people know of them. I think for my YJ I used a center in / offset out 2.25" on both.
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post #7 of 26 Old 05-18-2010, 01:17 PM Thread Starter
DanielShearer
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Ah nice, we are replacing the pipe from the muffler back because it fell off from the previous owner, so i figured i would do from muffler back... the guy put headers and a new catalytic converter in it.

And yah are the glass packs and thrush busters illegal in maryland though? or are they not as loud on a jeep

and yh go to tiny pic, itll tell you to upload a photo then u use the forum coding
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post #8 of 26 Old 05-18-2010, 01:32 PM
Chris Aunchman
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In Mass I was able to X-out the cat and got with a 2" to 2.25" expander then straight pipe to the muffler. Made a nice clean hook-up. They got rid of the sniffer tester and only perform emissions on OBD II vehicles.
As far as the noise level I wish I had a recordering it isn't loud at all and has a VERY nice idle. Its not really a glass pack for the fact it still uses a diverter plate in the muffler.....here is a link
Cherry Bomb 88100 - Cherry Bomb Vortex Mufflers - Overview - SummitRacing.com
Also use the "Band-style" clamps on the mufflers....they don't crimp the pipe and I prefer it to welding anyday considering if you ever want to drop the exhaust. They are made by "Walker"
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post #9 of 26 Old 05-18-2010, 06:58 PM
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Super Turbo cat back. Got the $75 rebate going now too.
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post #10 of 26 Old 05-18-2010, 07:09 PM
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I went with Borla. Clean sound. Very happy. Not to loud. Trying to find the write some company did on the muffler. Tested all the big names. Borla produced the most power, and was the quietest.

I got it here
http://wickednicky.com/borla_pro_xs.html

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post #11 of 26 Old 05-18-2010, 09:42 PM Thread Starter
DanielShearer
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My jeep has a header on it, so after emissions passes how would it sound if i ran a straight back pipe to a muffler?
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post #12 of 26 Old 05-18-2010, 10:46 PM
MoparFreak69
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The cat doesnt really do much for the sound of an exhaust. It will tone it down ever so slightly just because of its design, but it by no means acts as a muffler. Deleting it will not change the sound. A good cat does nothing to affect the performance of a rig and at the same time is better for the environment. If its not plugged why toss it? I am not a tree hugging hippy by any means but the least we can do is make the least impact on the environment as possible right? A cat simply uses heat and ceramic to convert carbon monoxide (poisonous) to carbon dioxide (what we do when we exhale). Leave the cat on if its good and just find a nice sounding muffler and be done with it.
As far as recommendations on muffler? Its all about personal preference really. When I had my quad everybody was trying to get me to buy a Yoshimura exhaust for it. I didnt like the tone and ended up going with a Pro Circuit. Just because the recommendation is what everybody likes doesnt mean you are going to like it as well.

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post #13 of 26 Old 05-18-2010, 10:46 PM
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Quote:
Originally Posted by UltimatE View Post
Dynomax super turbo. Put one on literally every jeep I've owned. Love it.
If you are closer to 20 years old than 50 you might like the noise of this muffler. I hated it on mine and went back to stock type muffler. I am closer to 50 but my son thought all the racket was cool.

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post #14 of 26 Old 05-18-2010, 11:26 PM
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Have to agree. The Magnaflow I put on the suburban was the 22" body (#12590) and it's quiet with a small-small rumble. if stock is a 2 on the db, this one is a 3-4. Just right. I have two kids under 2yrs and they both sleep without issue. At 40yr I didn't want loud neither. The Borla on the jeep is louder, but not bad though.
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post #15 of 26 Old 05-18-2010, 11:57 PM
JPRatYJ
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Quote:
Originally Posted by 4.7stroker View Post
There is little power to be gained from exhaust mods.
I would stick with a stock or near stock system only replacing stuff if it needs it.
You will spend plenty of money on your jeep when it breaks down.

Dwayne
it couldn't be said more truthfully i've spent almost 2g's working on my jeep in the last 3 months because i bought it from some guy that didn't know what he was doing and yes i do all the work my self

/l ,[_____], 1990 YJ 4.2 Weber 34
l---L -[]lllllll[]- 4in Rustys, 3in body, 1.25 Shackles
()_) ()_)--o-)_) 33 Kumo's M/T and smittybilt tube fenders -----Johnny Rat-----
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