Exhaust?
Thread Starter
Newbie
Joined: May 2009
Posts: 11
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Year: 1988
Model: Cherokee
Engine: 4.0l HO Renix
Exhaust?
I feel like I've seen a picture of it, I'm wonder how it would sound and operate.
My jeep has no cat, no muffler and no tail pipe.
So, I'm thinking these combinations.
For cat and then muffler.
Glass pack, glass pack.
Cherry bomb vortex, glass pack.
Straight pipe, glass pack.
And whatever decent tail pipe I can find at a local parts store.
What do you guys think?
My jeep has no cat, no muffler and no tail pipe.
So, I'm thinking these combinations.
For cat and then muffler.
Glass pack, glass pack.
Cherry bomb vortex, glass pack.
Straight pipe, glass pack.
And whatever decent tail pipe I can find at a local parts store.
What do you guys think?
Senior Member
Joined: May 2009
Posts: 747
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From: North Jersey
Year: 1996 XJ Sport 2007 KJ Rubicon
Engine: 242 4.0 Ho, 226 3.7 V6
It doesn't matter off road use only or not it's still illegal and carries a hefty fine. Basically race cars get away with it cause they were built from scratch w/o one. Since yours came with it stock, removing it for any kind of use is illegal. A turndown is a short piece of exhaust pipe that turns the exhaust gas direction down, or rather whichever direction you mount it. It's cheaper, and will yield better results than a "cheap" tail pipe. IMHO side exhausts are just plain sick looking, and the turndown piece will be cheaper than the whole tail pipe. I have the stock cat with a glass pack and it has a nice rumble at idle, decent rumble at normal driving speeds, but is angry as hell and can be heard a long way away when you put your foot down. I even have the full factory tail piece with all the crappy kinked bends that seem to be present for no good reason. No cat is ammo for the "environmentalists" and "concerned citizens" (for lack of a polite term) to ban our lifestyle and close down the few areas left where wheeling is still legal.
Alabama
Thread Starter
Newbie
Joined: May 2009
Posts: 11
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Year: 1988
Model: Cherokee
Engine: 4.0l HO Renix
Oh wow, maybe it's a bit different here in Canada as for the off-road use. I myswell go for the high-flow cat just to stay in line and avoid the fine. I just hate the price tag.
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Senior Member
Joined: May 2009
Posts: 747
Likes: 0
From: North Jersey
Year: 1996 XJ Sport 2007 KJ Rubicon
Engine: 242 4.0 Ho, 226 3.7 V6
Your in canada... My bad I'm in the states so I have no clue about your laws. And it's not a state deal, it's a federal EPA deal if I'm not mistaken. Where abouts in Bama are you. Had some family down there at one point.
Thread Starter
Newbie
Joined: May 2009
Posts: 11
Likes: 0
Year: 1988
Model: Cherokee
Engine: 4.0l HO Renix
Well it's definitely illegal to drive catless on the roads, but I think off-road it's legal. Also, they're cracking down on faulty exhaust systems here anyways.
Senior Member
Joined: May 2009
Posts: 747
Likes: 0
From: North Jersey
Year: 1996 XJ Sport 2007 KJ Rubicon
Engine: 242 4.0 Ho, 226 3.7 V6
Personally I'd go with a high flow cat and a glass pack, I've heard stories of a nasty obnoxious smell from removing the cat, and if there's a need you could drive it on the road.
CF Veteran
Joined: Feb 2009
Posts: 1,184
Likes: 4
From: Ohio
Year: 1992
Model: Cherokee
Engine: 1995 ZJ 4.0
The law as I read it says it is more illegal to replace the cat then removing one. And if your car has more than 80,000 miles on it then by the same law you have to have it replaced. Section 6 paragraph 3 of the EPA's Clean Air Act*,ARE YOU LEGAL
Rules for Replacing Converters
In 1986, the U.S. Environmental Protection Agency issued new guidelines for the construction, efficiency and installation of aftermarket catalytic converters. All CleanAir converters listed in this catalog have been designed, tested and manufactured to meet this policy.
In addition, CleanAir converter listed in this catalog is appropriate for use under the current requirements of the California Air Resources Board (C.A.R.B.).
E.P.A. guidelines state that replacement converters may be installed only in the following situations:
1. The vehicle is missing a converter
2. A state or local inspection program has determined that the existing converter needs replacement
3. Vehicles manufactured prior to 1996 must have more than 50,000 miles, and a legitimate need for replacement must be established and documented
4. In cases of OBD Il-equipped vehicles (1996 and later), the O.E. manufacturer's 8-year/80,000-mile warranty must have expired and a legitimate need for replacement must be established and documented.
Please note that Federal law prohibits removal or replacement of a properly functioning O.E. converter.
When replacement of the converter is appropriate (as outlined above), the E.P.A. further requires that:
1. It be installed in the same location as the original
2. It be the same type as the original (i.e., two-way, three-way, three-way plus air/three-way plus oxidation)
3. It be the proper model for the vehicle application as determined and specified by the manufacturer
4. It be properly connected to any existing air injection components on the vehicle
5. It be installed with any other required converter for a particular application
6. It be accompanied by a warranty information card to be completed by the installer.
But I always use catalytic converters on my cars and would not go without one.
WINK:WINK
Rules for Replacing Converters
In 1986, the U.S. Environmental Protection Agency issued new guidelines for the construction, efficiency and installation of aftermarket catalytic converters. All CleanAir converters listed in this catalog have been designed, tested and manufactured to meet this policy.
In addition, CleanAir converter listed in this catalog is appropriate for use under the current requirements of the California Air Resources Board (C.A.R.B.).
E.P.A. guidelines state that replacement converters may be installed only in the following situations:
1. The vehicle is missing a converter
2. A state or local inspection program has determined that the existing converter needs replacement
3. Vehicles manufactured prior to 1996 must have more than 50,000 miles, and a legitimate need for replacement must be established and documented
4. In cases of OBD Il-equipped vehicles (1996 and later), the O.E. manufacturer's 8-year/80,000-mile warranty must have expired and a legitimate need for replacement must be established and documented.
Please note that Federal law prohibits removal or replacement of a properly functioning O.E. converter.
When replacement of the converter is appropriate (as outlined above), the E.P.A. further requires that:
1. It be installed in the same location as the original
2. It be the same type as the original (i.e., two-way, three-way, three-way plus air/three-way plus oxidation)
3. It be the proper model for the vehicle application as determined and specified by the manufacturer
4. It be properly connected to any existing air injection components on the vehicle
5. It be installed with any other required converter for a particular application
6. It be accompanied by a warranty information card to be completed by the installer.
But I always use catalytic converters on my cars and would not go without one.WINK:WINK
Last edited by bigbadxj; Jun 11, 2009 at 01:03 AM.
Senior Member
Joined: May 2009
Posts: 747
Likes: 0
From: North Jersey
Year: 1996 XJ Sport 2007 KJ Rubicon
Engine: 242 4.0 Ho, 226 3.7 V6
Yep. Stock unit installed at the factory when it was built, I have 136k on the od, and it passes emissions, and my mechanic (ASE and state certified and AAA recommended etc) backs it up saying it is in proper working order with no need for replacement.
Thread Starter
Newbie
Joined: May 2009
Posts: 11
Likes: 0
Year: 1988
Model: Cherokee
Engine: 4.0l HO Renix
The law as I read it says it is more illegal to replace the cat then removing one. And if your car has more than 80,000 miles on it then by the same law you have to have it replaced. So are YOU legal????
Rules for Replacing Converters
In 1986, the U.S. Environmental Protection Agency issued new guidelines for the construction, efficiency and installation of aftermarket catalytic converters. All CleanAir converters listed in this catalog have been designed, tested and manufactured to meet this policy.
In addition, CleanAir converter listed in this catalog is appropriate for use under the current requirements of the California Air Resources Board (C.A.R.B.).
E.P.A. guidelines state that replacement converters may be installed only in the following situations:
1. The vehicle is missing a converter
2. A state or local inspection program has determined that the existing converter needs replacement
3. Vehicles manufactured prior to 1996 must have more than 50,000 miles, and a legitimate need for replacement must be established and documented
4. In cases of OBD Il-equipped vehicles (1996 and later), the O.E. manufacturer's 8-year/80,000-mile warranty must have expired and a legitimate need for replacement must be established and documented.
Please note that Federal law prohibits removal or replacement of a properly functioning O.E. converter.
When replacement of the converter is appropriate (as outlined above), the E.P.A. further requires that:
1. It be installed in the same location as the original
2. It be the same type as the original (i.e., two-way, three-way, three-way plus air/three-way plus oxidation)
3. It be the proper model for the vehicle application as determined and specified by the manufacturer
4. It be properly connected to any existing air injection components on the vehicle
5. It be installed with any other required converter for a particular application
6. It be accompanied by a warranty information card to be completed by the installer.
Rules for Replacing Converters
In 1986, the U.S. Environmental Protection Agency issued new guidelines for the construction, efficiency and installation of aftermarket catalytic converters. All CleanAir converters listed in this catalog have been designed, tested and manufactured to meet this policy.
In addition, CleanAir converter listed in this catalog is appropriate for use under the current requirements of the California Air Resources Board (C.A.R.B.).
E.P.A. guidelines state that replacement converters may be installed only in the following situations:
1. The vehicle is missing a converter
2. A state or local inspection program has determined that the existing converter needs replacement
3. Vehicles manufactured prior to 1996 must have more than 50,000 miles, and a legitimate need for replacement must be established and documented
4. In cases of OBD Il-equipped vehicles (1996 and later), the O.E. manufacturer's 8-year/80,000-mile warranty must have expired and a legitimate need for replacement must be established and documented.
Please note that Federal law prohibits removal or replacement of a properly functioning O.E. converter.
When replacement of the converter is appropriate (as outlined above), the E.P.A. further requires that:
1. It be installed in the same location as the original
2. It be the same type as the original (i.e., two-way, three-way, three-way plus air/three-way plus oxidation)
3. It be the proper model for the vehicle application as determined and specified by the manufacturer
4. It be properly connected to any existing air injection components on the vehicle
5. It be installed with any other required converter for a particular application
6. It be accompanied by a warranty information card to be completed by the installer.
Senior Member
Joined: May 2009
Posts: 747
Likes: 0
From: North Jersey
Year: 1996 XJ Sport 2007 KJ Rubicon
Engine: 242 4.0 Ho, 226 3.7 V6