all muffler and exhaust questions go here!!!!!!
I guess this means no one knows the answer .. I will keep you updated
CF Veteran
Joined: Mar 2011
Posts: 1,842
Likes: 0
From: Woodinville, Bothell and Marysville Washington
Year: 2000
Model: Cherokee
Engine: I6 4.0
Originally Posted by LourensL
Sorry mate, I live in South Africa, where it is perfectly legal. I was not aware that question may infuriate some forum members . You see, out here a new cat costs R12 500, about 900 dollars I guess. So yea, we remove them.
I guess this means no one knows the answer .. I will keep you updated

And frankly, the whole illegal to remove Cat thing is mandated by US federal law
Last edited by assetts91; Sep 15, 2012 at 07:18 AM.
CF Veteran
Joined: Jun 2011
Posts: 2,858
Likes: 1
From: Nor-Cal
Year: 1990
Model: Cherokee
Engine: The venerable 4.0
Originally Posted by LourensL
Hey man- sorry if this has been asked before but: what would happen if I was to cut all three catalytic converters out of my 2005 hemi WK and replaced it with a section of pipe? The little buggers are blocked/toasted it seems
Yep the engine light is on anyway. We have guys selling Catfoolers out here which solves the problem in most models.
I would say only about 3% of the SA population actually knows what a Cat is - an this certainly does not include the morons making the laws. Enough on all that then before I get deleted. Thanks for your input.
I would say only about 3% of the SA population actually knows what a Cat is - an this certainly does not include the morons making the laws. Enough on all that then before I get deleted. Thanks for your input.
CF Veteran
Joined: Jun 2011
Posts: 2,858
Likes: 1
From: Nor-Cal
Year: 1990
Model: Cherokee
Engine: The venerable 4.0
Originally Posted by LourensL
Yep the engine light is on anyway. We have guys selling Catfoolers out here which solves the problem in most models.
I would say only about 3% of the SA population actually knows what a Cat is - an this certainly does not include the morons making the laws. Enough on all that then before I get deleted. Thanks for your input.
I would say only about 3% of the SA population actually knows what a Cat is - an this certainly does not include the morons making the laws. Enough on all that then before I get deleted. Thanks for your input.
Seasoned Member
Joined: Jan 2011
Posts: 266
Likes: 0
From: Canon City CO
Year: 1989
Model: Cherokee
Engine: Renix I6 4.0!
Will my exhaust be quieter if I run the system all the way out like stock? I cut mine after the cat, put a flowmaster 40 on it and dumped down right at the rear axle and its LOUD! Lol
CF Veteran
Joined: Sep 2011
Posts: 10,447
Likes: 0
From: Frederick, MD
Year: 1989
Model: Cherokee
Engine: 4.0
Originally Posted by lukeincolorado
Will my exhaust be quieter if I run the system all the way out like stock? I cut mine after the cat, put a flowmaster 40 on it and dumped down right at the rear axle and its LOUD! Lol
Wheel, break, fix, repeat
Joined: Dec 2011
Posts: 205
Likes: 0
From: Chesapeake, VA
Year: 1987
Model: Cherokee
Engine: AMC I6 4.0
Forgive me for not reading the first 145 pages of this thread. Last wheeling trip I stuffed my tail pipe "camel hump" up and forward causing it to melt my shock boot and also come into contact with my e-brake cable melting the sheathing. I want to put on a new tail pipe but keep it out of the way of rocks and such. I was thinking about just cutting it off right after the muffler but I read about too many problems with that setup. What about cutting it off right after the hump? I was thinking that the pipe would come down the back side of the "hump" and just end. The exhaust would go over the hump then straight down to the ground. I don't think my gas tank would be in danger of overheating. She is an 87 and came with a pretty stout gas tank cover. Also, it's back past the rear axle. Would the fumes still be a problem by in the cab?
If those ideas are worthless, does anyone have another idea that doesn't involve buying aftermarket exhaust systems. Has anyone else successfully re-routed their stock exhaust to keep it safe from wheeling?
P.S. I searched for about an hour and found tons of posts about exhaust upgrades, cat-back replacements, header repair/replacement, removing the dent in the down tube, and the cons of cutting your tail pipe right after the muffler. Although, I did find one post that talked about routing the tail pipe through the rear quarter panel. I'd like to consider that "Plan ZZ".
Thanks!
If those ideas are worthless, does anyone have another idea that doesn't involve buying aftermarket exhaust systems. Has anyone else successfully re-routed their stock exhaust to keep it safe from wheeling?
P.S. I searched for about an hour and found tons of posts about exhaust upgrades, cat-back replacements, header repair/replacement, removing the dent in the down tube, and the cons of cutting your tail pipe right after the muffler. Although, I did find one post that talked about routing the tail pipe through the rear quarter panel. I'd like to consider that "Plan ZZ".
Thanks!
soooo i have a 1997 jeep cherokee, has the stock cat, and muffler. I want to put a high flow cherry bomb muffler on her, and after inspection remove the cat. There is the O2 sensor on the cat, im sure that removing the cat will trigger off the check engine light< so does anyone know a way of removin the cat, w/o triggerin the dam light?? Thanks guys.


