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Unread 05-09-2011, 11:34 AM   #1
ScottyGunn
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Good Value Exhaust???

I need to replace the muffler and tailpipe. I could use this as an excuse to upgrade, ;0)

Any suggestions on a system that will be better than stock for MPG but won't cost me an arm and a leg? I don't want a real loud system, but I do like a little bit of throaty rumble.

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Unread 05-09-2011, 11:39 AM   #2
Dyn0mitemat
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The $30 autozone/advanced thrush or cherry bomb turbo both sound about the same, which is a nice rumble but not too loud
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Unread 05-09-2011, 11:51 AM   #3
ScottyGunn
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Do I need to start at the headers with a bigger diameter system to get better breathing or is that just something that is a myth and doesn't really help MPG?
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Unread 05-09-2011, 12:01 PM   #4
ajmorell
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You probably won't notice much increase at all in MPG to be honest, but starting from the headers back is the way to do it.
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Unread 05-09-2011, 02:38 PM   #5
Apollo24
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I would love to hear what aftermarket ($200-$400) exhausts people are using. I just bought another 98zj and never had to change exhausts on previous jeeps I owned. This one has an annoying leaking.
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Unread 05-09-2011, 02:54 PM   #6
ajmorell
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You can see what I'm running in my profile

Banks Torquetube header, custom downpipe, magnaflow high flow converter, 2.5" mandrel bent all the way out through a FM50
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Unread 05-09-2011, 02:57 PM   #7
ScottyGunn
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I just talked to a guy down at a local garage who I know that has a lifted Jeep. He thinks a Cherrybomb and 2 1/2" pipe is enough. I looked at Rusty's Offroad and found this:
http://rustysoffroad.com/mm5/merchan...y_Code=PER_EXH

It is only CAT back, but if there wouldn't be any noticeable improvement in MPG or pick-up then I guess it doesn't make sense to start at the block??
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Unread 05-09-2011, 03:21 PM   #8
ajmorell
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I can't say there isn't any difference doing it from the header back, but for sure you won't notice a difference from only the cat back. It also helps tremendously if you upgrade the intake side as well. If you couple those two you will notice a difference.
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Unread 05-09-2011, 03:23 PM   #9
Kolak
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If you're going to replace the entire exhaust, send me a PM with your email address and I'll send you all the information about my Kolak Exhaust. It's a 3" diameter system and includes a high flow converter as well as a muffler, and a mandrel bent tailpipe. JeepForum members get 10% off my regular prices.
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Unread 05-09-2011, 03:25 PM   #10
HighLonesome
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Do the cat too. Its probably not flowing well if its the original.
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Unread 05-09-2011, 03:43 PM   #11
ScottyGunn
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What kind of CAT does it use? I see a bunch of options for ports, etc....
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Unread 05-09-2011, 03:48 PM   #12
HighLonesome
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Quote:
Originally Posted by ScottyGunn View Post
What kind of CAT does it use? I see a bunch of options for ports, etc....
I used a Magnaflow universal fit. Passed NM emissions easily. Check with Kolak, pretty sure no ports necessary.
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Unread 05-09-2011, 03:58 PM   #13
ScottyGunn
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Quote:
Originally Posted by HighLonesome View Post
I used a Magnaflow universal fit. Passed NM emissions easily. Check with Kolak, pretty sure no ports necessary.
How loud is the Magnaflow? I use this rig hunting so I don't want to scare off everything in the woods, lol.
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Unread 05-09-2011, 04:29 PM   #14
coralman
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You tube has some jeeps with different exhaust installed so you can get an idea what they will sound like. As it stands right now I'm thinking about a APN header, stock exhaust pipe, direct fit magnaflow cat,and the magnaflow cat back. Not looking for mpg's cause it wont make that much difference, but want to fix the leaks and get rid of the cell.
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Unread 05-09-2011, 04:39 PM   #15
ajmorell
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The converter won't make a huge huge difference in sound, well at least not nearly as much as the muffler selection will.
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