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Go Back JeepForum.com > Models > Jeep Grand Cherokee & Commander Forums > ZJ Grand Cherokee Forum > ZJ - Exhaust/Muffler Set-ups

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Unread 10-01-2008, 09:47 AM   #31
Mr. Breeze
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1997 ZJ 
Join Date: Apr 2006
Location: Ft. Gordon, GA
Posts: 474
I'm running a Flowmaster 70 with a turndown. It sounds great and I believe it's also what Kolak recommends. Make sure you specify 2.5" pipes, even if you aren't replacing the manifold yet. If you get a header in the future it will save some money over having all the pipes replaced.

Also, if you get a turndown put on, make sure they add an exhaust hanger near the end so all the weight isn't on the pipes/cat/muffler.

'97 ZJ, 4wd, 4.0, 3" Pro Comp lift, 31" BFG MT KM2s, JKS Front & Rear trackbars, JKS Disco's, Rear Aussie
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Unread 10-01-2008, 10:08 AM   #32
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1994 ZJ 
Join Date: Sep 2008
Location: B.C.
Posts: 108
Originally Posted by MoonyJohn View Post
what muffler are you running?
Flowmaster 50 with no cat
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Unread 11-04-2012, 07:43 AM   #33
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1998 ZJ 
Join Date: Sep 2011
Location: Desenzano del Garda (BS), Italy
Posts: 225
i have an hi-flo cat (magnaflow) and i'd like to remove the muffler to get some performance and sound.
what do you think about removing the muffler?
will it be much louder?
any advices?
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Unread 11-04-2012, 10:09 PM   #34
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1996 ZJ 
Join Date: Oct 2012
Location: lake elsinore, ca
Posts: 117
Magnaflow with a CA approved cat... kinda loud if you ask me but i guess that means I'm getting old
Never underestimate stupid people in large numbers
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Unread 11-04-2012, 10:22 PM   #35
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1996 ZJ 
Join Date: Nov 2012
Location: Medford, Or
Posts: 267
I'm ordering my 3" exhaust from kolak within the next few days, getting the magnaflow hi flow catalytic converter, a large case magnaflow muffler, rolled edge chrome magnaflow tips and mandrel bent piping. Ill let you know how it is after I get it installed. I got all that plus both upstream and downstream mopar o2 sensors all shipped to my door for $550
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Unread 11-05-2012, 08:41 AM   #36
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2000 WJ 
Join Date: Sep 2007
Posts: 855
Anyone done dual exhaust on a 5.2?

I saw a ZJ driving that had dual pipes... couldn't stop to see how he'd done it.

Seems like it would be a bear to route the left pipe.
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Unread 11-05-2012, 09:58 AM   #37
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1993 ZJ 
Join Date: May 2012
Location: Chesterfield, MICHIGAN
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Is the kolak loud?
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Unread 04-13-2013, 05:30 PM   #38
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1999 TJ Wrangler 
Join Date: Apr 2013
Location: mount sterling, illinois
Posts: 2
zj exhaust

i ran a no cat 18 inch glasspack on my zj 4.0 with 3.25' tip. sounded nice after it broke in
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