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post #1 of 9 Old 02-26-2010, 08:18 PM Thread Starter
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2000 TJ Wrangler 
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xj exaust.

hey guys my cat on my 1996 jeep cherokee is rattling and stoped up. since there is no emmisions law where i live i was wanting to just take my cat off and add a new muffler in the place of the old one. i want a good deep sound that isnt crazy loud. what do you guys suggest?

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post #2 of 9 Old 02-26-2010, 08:20 PM
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Even tho there is no emission inspection in Tennessee it is still a federal offense to remove a converter on a vehicle that came with one from the factory.

As far as the muffler....I recommend the Thrush welded (looks like a flowmaster)

95' XJ Country - Stock Skids - D30/D35 Limited Slip - 3" Lift - 31x10.50R15 - 4.0 HO - AX15 - NP231

98' XJ Classic - D30/C8.25 - 4.5" RC Lift - 33x12.50R15 - 4.0 HO - AW4 - NP231
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post #3 of 9 Old 02-26-2010, 08:59 PM
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Flow master super 40! Deep but not to loud inside! As for the cat I have been busted here in CA for modified emissions! Not good times. The judge took the fine off because it took me so long to find a ref because the budget cuts had em all closed! But definatley not worth the risk
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post #4 of 9 Old 02-26-2010, 09:02 PM
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i've heard that you want to keep your cat just to keep back pressure so you keep low end torque.

98 Green Cherokee Classic 4.0
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post #5 of 9 Old 02-26-2010, 09:17 PM
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And vehicle will run like crap with it removed.
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post #6 of 9 Old 02-27-2010, 03:24 AM
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if you want deep sound....buy a V8...that's about the only advice i can give...

i have a welded thrush welded just after the cat w/ stock piping running to the rear of the xj...it is deeper at idle and up until 3k, after 3k you honestly can barely hear the rumble and at highway speeds you don't hear anything at all...you'd think it was a stock jeep...so i'd def reccomend it...
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post #7 of 9 Old 02-27-2010, 05:11 AM
It's the crank sensor!
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Originally Posted by Telecaster31 View Post
what do you guys suggest?
Leave the catalytic converter on. Illegal to remove and you'll have constant check engine lights with it removed.

You should be able to find a replacement for less than a hundred bucks.

Here is a link that might help.


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Past Jeeps: 49 Willys, 81 Scrambler, 88 Comanche
Without "data", all you have is an opinion!
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post #8 of 9 Old 02-27-2010, 08:49 AM
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just fyi. theres a recall on the cat. mine did the same thing i took it off punched it out put it back on and it runs fine. dont come to the nashville area cause there is an emmisions law and it has to be there. just call the dodge jeep dealer in your area about the recall
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post #9 of 9 Old 02-27-2010, 10:56 AM Thread Starter
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thank you man. my friend was telling me they had a recall on my year model but i wasn't for sure.
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