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Modified XJ Cherokee Tech XJ (84-01)
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all muffler and exhaust questions go here!!!!!!

Old 09-11-2011, 02:28 PM
  #61  
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What year is your jeep?
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Old 09-11-2011, 02:30 PM
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Originally Posted by Slick761 View Post
What year is your jeep?
Me? 88
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Old 09-11-2011, 02:31 PM
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Hmm
..that doesn't sound muffler related...but I guess if u want it to be loud go for a flowmaster 10.it shouldn't harm nor hurt you...also on the safe side...also id look at your o2 sensors for that idel issue
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Old 09-11-2011, 02:32 PM
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The O2 gets replaced every year. What I'm saying is it seems like it needs some back pressure.
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Old 09-11-2011, 02:35 PM
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I've never heard of that issue...but ok anyone else know about that?. Must just be renix engine issue...im lost on that one
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Old 09-11-2011, 02:40 PM
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Eh prolly a renix issue. I'll ask the renix guru here.
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Old 09-11-2011, 02:40 PM
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Renix have no parameters for back pressure.. I believe late jeeps do as taking the cat off should throw a cel.. it may lean out the mixture a little....
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Old 09-11-2011, 02:43 PM
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Right vehicles that have an o2 in the cat you rly can't cut them off BC of that sensor...but his problem sounds like something else. Maybe a cracked header ? Or f'd up manifold gasket?
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Old 09-11-2011, 02:44 PM
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Originally Posted by Slick761 View Post
Renix have no parameters for back pressure.. I believe late jeeps do as taking the cat off should throw a cel.. it may lean out the mixture a little....
Thats something to consider. Thanks guys I don't wanna turn this thread into diagnosing jeepingdans renix thread lol
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Old 09-11-2011, 02:45 PM
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it can't be a back pressure issue BC even at the headers and down pipe there is back pressure removing muffler and tail pipe or having a glass pack should not do that.
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Old 09-11-2011, 02:46 PM
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Originally Posted by JeepingDan View Post
Thats something to consider. Thanks guys I don't wanna turn this thread into diagnosing jeepingdans renix thread lol
lol its ok man no problem
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Old 09-11-2011, 04:02 PM
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Bump.
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Old 09-11-2011, 04:06 PM
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Default Borla Header....

Hiya guys...I have a 90 XJ, which I'm parting out, and it has a Borla SS header. I was wondering if it will fit the 96 that I'm doing over..thanks in advance....
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Old 09-11-2011, 04:11 PM
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No I don't believe it will. Go to the website and see if your header fits your 96...if not I will take it for my 93 lol
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Old 09-11-2011, 07:10 PM
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question i have is which is better for my 01 xj which is going to be a dd. should i use a Magnaflow cat back or flow master cat back, if flow master which one is better for a dd, super 40 or super 44
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