all muffler and exhaust questions go here!!!!!!
Seasoned Member
Joined: Dec 2010
Posts: 402
Likes: 2
From: Charlotte/Raleigh, NC
Year: 1999
Model: Cherokee
Engine: 4.0 MPI
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?
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?
Junior Member
Joined: Jun 2012
Posts: 31
Likes: 0
From: NW Montana
Year: 1996
Model: Cherokee
Engine: I6
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?
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?
Senior Member
Joined: Aug 2009
Posts: 558
Likes: 0
From: Mildenhall, United Kingdom
Year: 1996
Model: Cherokee
Engine: 4.0L H.O.
CF Veteran
Joined: May 2011
Posts: 2,135
Likes: 1
From: Santa Rosa, California
Year: 1987 Comanche,1990
Model: Cherokee
Engine: 4.0L Renix
Senior Member
Joined: Aug 2009
Posts: 558
Likes: 0
From: Mildenhall, United Kingdom
Year: 1996
Model: Cherokee
Engine: 4.0L H.O.
Former Sponsor
Joined: Feb 2010
Posts: 474
Likes: 0
From: Roanoke VA
Year: 1995
Model: Grand Cherokee
Engine: 4.0L
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.
Super 40's and 44's are painted black. Original 40's and Delta Flow 40's are painted grey.
CF Veteran
Joined: Feb 2012
Posts: 1,222
Likes: 1
From: Buffalo, NY
Year: 2001
Model: Cherokee
Engine: 4.0
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?
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?
Junior Member
Joined: Jun 2012
Posts: 31
Likes: 0
From: NW Montana
Year: 1996
Model: Cherokee
Engine: I6
CF Veteran
Joined: Feb 2012
Posts: 1,222
Likes: 1
From: Buffalo, NY
Year: 2001
Model: Cherokee
Engine: 4.0
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.
Member
Joined: Jun 2012
Posts: 170
Likes: 0
From: Culpeper, VA
Year: 1999
Model: Cherokee
Engine: 4.0L H.O.
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?
Any other upgrades I should do at the same time?
Member
Joined: Oct 2011
Posts: 164
Likes: 0
From: Santa Rosa
Year: 1990
Model: Cherokee
Engine: 4.0 I6
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?
Any other upgrades I should do at the same time?
CF Veteran
Joined: May 2011
Posts: 2,135
Likes: 1
From: Santa Rosa, California
Year: 1987 Comanche,1990
Model: Cherokee
Engine: 4.0L Renix
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.
Super 40's and 44's are painted black. Original 40's and Delta Flow 40's are painted grey.
CF Veteran
Joined: May 2011
Posts: 2,135
Likes: 1
From: Santa Rosa, California
Year: 1987 Comanche,1990
Model: Cherokee
Engine: 4.0L Renix