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Unread 05-13-2013, 09:00 PM   #1
justinmarr
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1993 YJ Wrangler 
 
Join Date: Mar 2013
Location: Trinity, TX
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Best sounding muffler for a YJ?

Im looking at the Flowmaster 40 series or the Super 44. All I'm looking for is a bad *** sound. I've got a 4.0 w/Headers so far Thanks

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Unread 05-13-2013, 09:39 PM   #2
Relicmoto
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1989 YJ Wrangler 
 
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Thrush turbo 2. Comes in two flavors, welded, or rolled. About $30 for rolled, $50 for the welded. Not as loud as the flows but deep rumble. People notice. Couple bonuses here...you just saved some bones for a awesome exhaust tip. In addition, a quieter muffler will make fewer people look at you, and in turn all jeep enthusiasts, in disgust. If you do any off road terrain a $50 muffler hurts a lot less when that sharp rock or loose branch you didn't see on the log you just drove over smashes it.

Last edited by Relicmoto; 05-13-2013 at 09:44 PM.. Reason: Fixed the asterisk appearance.
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Unread 05-13-2013, 11:52 PM   #3
jeepyj13
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Quote:
Originally Posted by justinmarr
Im looking at the Flowmaster 40 series or the Super 44. All I'm looking for is a bad *** sound. I've got a 4.0 w/Headers so far Thanks
I have a flow master 40series on my yj. 4.0 and it sounds bad*** at least to me it does.
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Unread 05-14-2013, 03:42 AM   #4
befumo
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Post videos guys. Damn.. i want to hear!

Bonus point for a 4.2
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Unread 05-14-2013, 11:45 AM   #5
Reno72
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I have Flowmaster through Borla headers and it sounds much better, but still a little high for my taste. I wish it was a V8, nothing you put on the 4.0 will give it that low rumble of a big block motor, I love the sound of my flowmaster on my 2500 HD.
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Unread 05-14-2013, 03:33 PM   #6
zeus87gn
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I have a FM 40 series on my 87 with the 4.2
Single inlet, dual outlet with dual pipes to the back corners - all 2-1/2" pipe
Nice deep throaty sound - I've received a multitude of compliments on it
But this same muffler on our 92 with a 4.0 sounds nothing like it
It's quieter and smother sounding than my 4.2
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Unread 05-14-2013, 03:40 PM   #7
bgredjeep
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I installed a new exhaust in my wife's YJ a while back. Used a Dynomax Ultra Flo welder muffler and it sounds pretty good IMO. Here are a couple videos I found of YJs with this muffler. The last video is my wife doing a drive by while I was teaching her to drive the Jeep.

https://www.youtube.com/watch?v=CHxGvkzkGDQ

https://www.youtube.com/watch?v=idUmGJQvOQY

https://www.youtube.com/watch?v=PExyj2aiSfQ
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Unread 05-15-2013, 06:35 AM   #8
JeeperDon
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Quote:
Originally Posted by justinmarr View Post
All I'm looking for is a bad *** sound.
Save your money for college.
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Unread 05-15-2013, 08:46 AM   #9
Shapes04wj
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I have a flowmaster 40 on mine IMO it sounds great, just like a 4.0 is supposed to sound.
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Unread 05-15-2013, 09:50 AM   #10
roadyrob
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I have a magnaflow xl on my 4.2, cat and muffler are 2 1/2" the larger pipe gives a deeper sound. a little loud but I like it. had a guy ask me if it was a V8.
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Unread 05-15-2013, 03:47 PM   #11
jserna
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I have a gibson, nice deep sound. Just loud enough.
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Unread 05-15-2013, 04:16 PM   #12
jameslinn83
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1992 YJ Wrangler 
 
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The quietest one you can find, six cylinders never sound good loud, only v8s sound good piped. In my opinion... However as we all do, do what makes you happy.
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