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Old 06-19-2012, 08:45 PM
  #1861  
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Originally Posted by UsmclovesXJ
Hey so I'm pretty well knowing when it comes to exhaust questions. So instead of making a new thread for your question post it here and I or someother people will answer it for you...or pm me if u need a question answered right now like an emergency. Other then that I'm mostly on everyday. So post up some questions. From what to look for in a new muffler. Or to troubleshooting questions. Thanks all lets see those posts
Need to know. Will exhaust manifold from 4.0 HO fit my 258?
Old 06-20-2012, 05:58 AM
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Originally Posted by D PHILLY

Would just a super 40 do anything to my MPG? (muffler only)
Just a muffler probably won't make any noticeable difference. It'll help if anything.
Old 06-20-2012, 06:20 AM
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Originally Posted by 99superjeep01

Just a muffler probably won't make any noticeable difference. It'll help if anything.
Alright thanks! Also since you seem to know about them, which kinda of neon injectors would I need? (94-XJ 4.0)
Old 06-20-2012, 08:05 AM
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Originally Posted by mudfrog
Not so.. the Super 40 has a larger case and is not quite as loud as the 44. Interior sound is also a little lower. Flowmaster states to use the Super 40 on high horsepower applications.

They made an Off Road version of the Original 40 and Super 44 but they no longer make those.
Thanx for the clarification that just what i understood it to be from the descriptions iv read and did they really quit making the 44 off road modle cuz i saw it for sale on a few sites the other day?
Old 06-20-2012, 08:56 AM
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Originally Posted by D PHILLY

Alright thanks! Also since you seem to know about them, which kinda of neon injectors would I need? (94-XJ 4.0)
You need the 703's. Can't remember exactly what year. But the number on the side of the injector ends in "703"
Old 06-20-2012, 08:58 AM
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Originally Posted by moesizlak07

You need the 703's. Can't remember exactly what year. But the number on the side of the injector ends in "703"
True story. Search the for sale section, there's usually a few on there. At least you could get info and go buy some from a parts store.
Old 06-20-2012, 11:30 AM
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just to double check this is not supposed to have any twistable play. it's the coupler off of the manifold

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Old 06-21-2012, 03:46 PM
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im looking to get a new header because i cracked the one on it now witch is not stock , im wondering what the differences are an what kind would be recommended , i wanna stay kinda cheap but not lose any performance does it matter what i get . where should i look ?
Old 06-21-2012, 04:00 PM
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Originally Posted by jonc81
im looking to get a new header because i cracked the one on it now witch is not stock , im wondering what the differences are an what kind would be recommended , i wanna stay kinda cheap but not lose any performance does it matter what i get . where should i look ?
Ive got the banks and LOVE it, but watch out $$$$$$, ive seen whole xj's sell for less. I think some guys on here run the pace setter, I think they are around 200 bucks. The banks sounds mean and is manderal bent stainless tho.
Old 06-21-2012, 04:07 PM
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I'm gonna fiix my cracked header with JB Weld,around $3.Worth a shot.
Old 06-21-2012, 06:14 PM
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Originally Posted by Big David
I'm gonna fiix my cracked header with JB Weld,around $3.Worth a shot.
Not gonna work lol.
Old 06-21-2012, 06:50 PM
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Originally Posted by austinjoe13
Not gonna work lol.
x2 I tried it on my stock cracked manifold. held for about 15 minutes, but after it warmed up it blew out. Then I tried running a few beads with my mig on it, and that held for about a month, then cracked again. But now I'm very happy with my Pacesetter long tube header/downpipe assembly
Old 06-22-2012, 12:36 AM
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I love my pacesetter.
Old 06-22-2012, 02:08 PM
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I am a hard head, so I'm still gonna try it.

I have $3 to spend,not $300.
Old 06-22-2012, 02:10 PM
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What's a good caddy to buy?I'm currently running a glasspack as well.

Last edited by my89xj; 06-22-2012 at 02:12 PM.


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