Modified XJ Cherokee Tech XJ (84-01)
All modified tech questions. If it modifies your XJ beyond stock parts ask it here.
Sponsored by:
Sponsored by:

all muffler and exhaust questions go here!!!!!!

Thread Tools
 
Search this Thread
 
Old 06-26-2012, 08:19 PM
  #1891  
Seasoned Member
 
99Classic's Avatar
 
Join Date: Dec 2010
Location: Charlotte/Raleigh, NC
Posts: 402
Likes: 0
Received 2 Likes on 2 Posts
Year: 1999
Model: Cherokee
Engine: 4.0 MPI
Default

Originally Posted by 99Classic
I have heard good things about the APN header. I found it on amazon for $160 here
http://www.amazon.com/Automotive-Par...pr_product_top

This is a decent price from what I've seen however I was looking on ebay and I found this header

http://www.ebay.com/itm/1991-99-Jeep...ht_2442wt_1163

They both look identical and have similar descriptions, the ebay listing just doesn't say APN. What do yall think?
Anybody know if they're the same?
Old 06-26-2012, 10:23 PM
  #1892  
Junior Member
 
cazador's Avatar
 
Join Date: Jun 2012
Location: NW Montana
Posts: 31
Likes: 0
Received 0 Likes on 0 Posts
Year: 1996
Model: Cherokee
Engine: I6
Default

My 96 has had a bad cat code since I bought it (turned out PO had hollowed it out). Last weekend I put a new Magnaflow cat on. The cat to muffler fit was good, but the cat to down pipe was loose. I put a couple of exhaust clamps on and that snugged it up, but it's leaking exhaust at the down pipe and now I have a high idle (1500 rpm) problem. I also found a hairline crack in the exhaust manifold that may be new, but it's a minor leak compared to cat-downpipe connection.

Would an sizable exhaust leak at the cat-downpipe cause high idle? Should I just take it to a shop and have them weld it on?
Old 06-26-2012, 10:33 PM
  #1893  
Senior Member
 
91XJMudMan's Avatar
 
Join Date: Aug 2009
Location: Mildenhall, United Kingdom
Posts: 558
Likes: 0
Received 0 Likes on 0 Posts
Year: 1996
Model: Cherokee
Engine: 4.0L H.O.
Default

Originally Posted by NorCalJeep
What do you guys think sounds better; the super 40 or 40 series Flowmaster mufflers on the 4.0L?
Theres a difference? F**K!!! Well now I don't know what muffler I have
Old 06-26-2012, 10:37 PM
  #1894  
CF Veteran
 
NorCalJeep's Avatar
 
Join Date: May 2011
Location: Santa Rosa, California
Posts: 2,135
Likes: 0
Received 1 Like on 1 Post
Year: 1987 Comanche,1990
Model: Cherokee
Engine: 4.0L Renix
Default

Originally Posted by 91XJMudMan
Theres a difference? F**K!!! Well now I don't know what muffler I have
I was talking about the Original 40 and the Super 40.
Old 06-26-2012, 10:41 PM
  #1895  
Senior Member
 
91XJMudMan's Avatar
 
Join Date: Aug 2009
Location: Mildenhall, United Kingdom
Posts: 558
Likes: 0
Received 0 Likes on 0 Posts
Year: 1996
Model: Cherokee
Engine: 4.0L H.O.
Default

Originally Posted by NorCalJeep
I was talking about the Original 40 and the Super 40.
How can you tell the difference between the two? is the muffler marked somewhere?
Old 06-27-2012, 06:47 AM
  #1896  
Former Sponsor
 
mudfrog's Avatar
 
Join Date: Feb 2010
Location: Roanoke VA
Posts: 474
Likes: 0
Received 0 Likes on 0 Posts
Year: 1995
Model: Grand Cherokee
Engine: 4.0L
Default

Originally Posted by NorCalJeep
I was talking about the Original 40 and the Super 40.
They haven't made the original 40 in the offset that our jeeps need in a long time (almost 10 years). If anyone wants to run the Original 40 they need to have a custom exhaust done. For the simplicity the Super 44 or Super 40 would be the path to take.

Super 40's and 44's are painted black. Original 40's and Delta Flow 40's are painted grey.
Old 06-27-2012, 08:37 AM
  #1897  
CF Veteran
 
99superjeep01's Avatar
 
Join Date: Feb 2012
Location: Buffalo, NY
Posts: 1,222
Likes: 0
Received 1 Like on 1 Post
Year: 2001
Model: Cherokee
Engine: 4.0
Default

Originally Posted by cazador
My 96 has had a bad cat code since I bought it (turned out PO had hollowed it out). Last weekend I put a new Magnaflow cat on. The cat to muffler fit was good, but the cat to down pipe was loose. I put a couple of exhaust clamps on and that snugged it up, but it's leaking exhaust at the down pipe and now I have a high idle (1500 rpm) problem. I also found a hairline crack in the exhaust manifold that may be new, but it's a minor leak compared to cat-downpipe connection.

Would an sizable exhaust leak at the cat-downpipe cause high idle? Should I just take it to a shop and have them weld it on?
Band clamps!!! Just as good as welding when it comes to exhaust, but you can remove it. They're $10-$15 at an auto parts store.
Old 06-27-2012, 10:33 AM
  #1898  
Junior Member
 
cazador's Avatar
 
Join Date: Jun 2012
Location: NW Montana
Posts: 31
Likes: 0
Received 0 Likes on 0 Posts
Year: 1996
Model: Cherokee
Engine: I6
Default

Originally Posted by 99superjeep01
Band clamps!!! Just as good as welding when it comes to exhaust, but you can remove it. They're $10-$15 at an auto parts store.
Thanks for the tip! I'll stop by NAPA today and try to find some band clamps. My local O'Reilly's just had the regular u-bolt style.
Old 06-27-2012, 11:57 AM
  #1899  
CF Veteran
 
99superjeep01's Avatar
 
Join Date: Feb 2012
Location: Buffalo, NY
Posts: 1,222
Likes: 0
Received 1 Like on 1 Post
Year: 2001
Model: Cherokee
Engine: 4.0
Default

Originally Posted by cazador

Thanks for the tip! I'll stop by NAPA today and try to find some band clamps. My local O'Reilly's just had the regular u-bolt style.
No problem! I just used them for the first time recently and realized it could have saved me alot of time and headache trying to weld it and cut it back out. Just be careful cause I've got 2.5" piping and got a 2.5" clamp and it was just a bit too small so I had to get the next size up because of the I.d. and o.d.
Old 06-27-2012, 12:20 PM
  #1900  
Member
 
Critz2's Avatar
 
Join Date: Jun 2012
Location: Culpeper, VA
Posts: 170
Likes: 0
Received 0 Likes on 0 Posts
Year: 1999
Model: Cherokee
Engine: 4.0L H.O.
Default Need New Exhaust

Hey guys, I just bought my 99 XJ 4.0 about a month ago. The exhaust system, (cat, muffler, and pipes) are all rusty and starting to get holes. What muffler/cat/pipe combo would be good to make it sound mean but not too loud, and not cost too much?

Any other upgrades I should do at the same time?
Old 06-27-2012, 12:38 PM
  #1901  
Member
 
Joe'sXJ's Avatar
 
Join Date: Oct 2011
Location: Santa Rosa
Posts: 164
Likes: 0
Received 0 Likes on 0 Posts
Year: 1990
Model: Cherokee
Engine: 4.0 I6
Default

Originally Posted by Critz2
Hey guys, I just bought my 99 XJ 4.0 about a month ago. The exhaust system, (cat, muffler, and pipes) are all rusty and starting to get holes. What muffler/cat/pipe combo would be good to make it sound mean but not too loud, and not cost too much?

Any other upgrades I should do at the same time?
I went with the super 44 flow master, it sounds epic with my honeycomb cat. all around 164$ including install. (cat was from previous). Just go on utube and see what they sound like. I think u would like the super 44. Super 40 seems to loud, almost like a yoda, or ricer
Old 06-27-2012, 05:06 PM
  #1902  
CF Veteran
 
NorCalJeep's Avatar
 
Join Date: May 2011
Location: Santa Rosa, California
Posts: 2,135
Likes: 0
Received 1 Like on 1 Post
Year: 1987 Comanche,1990
Model: Cherokee
Engine: 4.0L Renix
Default

Originally Posted by mudfrog
They haven't made the original 40 in the offset that our jeeps need in a long time (almost 10 years). If anyone wants to run the Original 40 they need to have a custom exhaust done. For the simplicity the Super 44 or Super 40 would be the path to take.

Super 40's and 44's are painted black. Original 40's and Delta Flow 40's are painted grey.
What is the offset for our jeeps?
Old 06-27-2012, 05:08 PM
  #1903  
CF Veteran
 
austinjoe13's Avatar
 
Join Date: Nov 2011
Location: Northern MN
Posts: 2,433
Likes: 0
Received 6 Likes on 5 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: Renix 4.0
Default

Originally Posted by NorCalJeep
What is the offset for our jeeps?
Center in, offset out
Old 06-27-2012, 05:10 PM
  #1904  
CF Veteran
 
austinjoe13's Avatar
 
Join Date: Nov 2011
Location: Northern MN
Posts: 2,433
Likes: 0
Received 6 Likes on 5 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: Renix 4.0
Default

Anyone on here have an 8" cherry bomb? I heard my exhaust from outside for the first time today, it's pretty diesely
Old 06-27-2012, 05:23 PM
  #1905  
CF Veteran
 
NorCalJeep's Avatar
 
Join Date: May 2011
Location: Santa Rosa, California
Posts: 2,135
Likes: 0
Received 1 Like on 1 Post
Year: 1987 Comanche,1990
Model: Cherokee
Engine: 4.0L Renix
Default

Wpuld this 40 work on my Jeep?
http://www.flowmastermufflers.com/sh...e=&orig=842442


Quick Reply: all muffler and exhaust questions go here!!!!!!



All times are GMT -5. The time now is 09:17 PM.