Cutting off Catyliac Convertor
LilLaObOi50
05-31-2005, 03:57 PM
i was wondering if it was safe to cut off my Catyliac Convertor off my 97 Civic DX. can i just replace it with a pipe and straight pipe it all the way to the back with 2 1/2 inch piping. it wont mess up my car will it.
BrodyP
05-31-2005, 04:01 PM
Yea I had my removed. Its illegal. The check engine light will indefinitly stay on. Why are you taking it off? My car sounds like crap now thats its off and smells like a gas station. The car is also running too rich now which is causing more problmes. I am getting a high flow cat welded on when I get some extra cash cause its just to much of a hassel now.
eckoman_pdx
06-01-2005, 06:40 AM
Don't mess with removing your cat and replacing it with a straight pipe. It's a violation of federal law, for one. You have to have a functioning cat. Now, replacing it with a high flow cat is one option, and a much better one at that.
Randon Technolgoies makes good street legel high flow cats, both bolt on and weld on.
Randon Technolgoies makes good street legel high flow cats, both bolt on and weld on.
termitesgraffix
06-01-2005, 01:10 PM
As illegal as it is, and I know the mod has a responsibility to keep law ans order, however, I don't much care. It is your car, you can get fined or go to jail if you want...
If you do in fact cut it off and bypass the cat...
1) put a resonator where the cat was, to help keep the sound throaty instead of can-like.
2) I take it your O2 sensor is in the cat? Take the O2 sensor and drill a hole in the downpipe high up toward the motor. Find a nut that is the same thread pitch and diameter as your O2 sensor and weld it to the hole, sealing the sides. Put the O2 sensor in and this should help the car run better again and the engine light go bye bye. By moving the O2 sensor up higher, you are compensating for the loss of fumes that are built up at the cat and catching them as they come out... Some old skool hot rod tuners would do this; they would have 3 points on their headers where they could adjust the lean or richness of the motor by moving the sensor and plugging the other holes. You might even get away with putting the sensor on the pipe just in front of the new resonator. Just make sure the sensor is in, or else you will have problems.
3) or as said, just get a high flow LEGAL cat.
If you do in fact cut it off and bypass the cat...
1) put a resonator where the cat was, to help keep the sound throaty instead of can-like.
2) I take it your O2 sensor is in the cat? Take the O2 sensor and drill a hole in the downpipe high up toward the motor. Find a nut that is the same thread pitch and diameter as your O2 sensor and weld it to the hole, sealing the sides. Put the O2 sensor in and this should help the car run better again and the engine light go bye bye. By moving the O2 sensor up higher, you are compensating for the loss of fumes that are built up at the cat and catching them as they come out... Some old skool hot rod tuners would do this; they would have 3 points on their headers where they could adjust the lean or richness of the motor by moving the sensor and plugging the other holes. You might even get away with putting the sensor on the pipe just in front of the new resonator. Just make sure the sensor is in, or else you will have problems.
3) or as said, just get a high flow LEGAL cat.
Rampart Crawler
06-01-2005, 08:22 PM
As illegal as it is, and I know the mod has a responsibility to keep law ans order, however, I don't much care. It is your car, you can get fined or go to jail if you want...
If you do in fact cut it off and bypass the cat...
1) put a resonator where the cat was, to help keep the sound throaty instead of can-like.
2) I take it your O2 sensor is in the cat? Take the O2 sensor and drill a hole in the downpipe high up toward the motor. Find a nut that is the same thread pitch and diameter as your O2 sensor and weld it to the hole, sealing the sides. Put the O2 sensor in and this should help the car run better again and the engine light go bye bye. By moving the O2 sensor up higher, you are compensating for the loss of fumes that are built up at the cat and catching them as they come out... Some old skool hot rod tuners would do this; they would have 3 points on their headers where they could adjust the lean or richness of the motor by moving the sensor and plugging the other holes. You might even get away with putting the sensor on the pipe just in front of the new resonator. Just make sure the sensor is in, or else you will have problems.
3) or as said, just get a high flow LEGAL cat.
I didn't even ask the question, but I still have to say thanks. That was very informational.
If you do in fact cut it off and bypass the cat...
1) put a resonator where the cat was, to help keep the sound throaty instead of can-like.
2) I take it your O2 sensor is in the cat? Take the O2 sensor and drill a hole in the downpipe high up toward the motor. Find a nut that is the same thread pitch and diameter as your O2 sensor and weld it to the hole, sealing the sides. Put the O2 sensor in and this should help the car run better again and the engine light go bye bye. By moving the O2 sensor up higher, you are compensating for the loss of fumes that are built up at the cat and catching them as they come out... Some old skool hot rod tuners would do this; they would have 3 points on their headers where they could adjust the lean or richness of the motor by moving the sensor and plugging the other holes. You might even get away with putting the sensor on the pipe just in front of the new resonator. Just make sure the sensor is in, or else you will have problems.
3) or as said, just get a high flow LEGAL cat.
I didn't even ask the question, but I still have to say thanks. That was very informational.
eckoman_pdx
06-02-2005, 03:43 AM
As illegal as it is, and I know the mod has a responsibility to keep law ans order, however, I don't much care. It is your car, you can get fined or go to jail if you want...
Whether I was a mod or not, I would never have suggested someone cut off the cat. When someone breaks the law like that it effects everyone, and I don't just mean by polluting the air we breath. When people get caught, it creates a stigma for everyone else. It gives other enthusiasts a bad name. It's people who break the law without care that bring down the authroites on everyone. Take street racing is some pats or So Cal, for example. In San Deigo, whether you street race or not, cops will harass you. People may not have given a care at first about illegel street racing, saying the same thing..."t is your car, you can get fined or go to jail if you want..."
However, now that mostly everyone is harassed now by the police there, becasue they just because they drive an import, it has effected everyone. People broke the law without care, and now everyone with a similer type of car pays the price. I'd much rather have people stay legel and do it right. It's no fun when everyone gets a negative stigma because of the actions of a few.
Whether I was a mod or not, I would never have suggested someone cut off the cat. When someone breaks the law like that it effects everyone, and I don't just mean by polluting the air we breath. When people get caught, it creates a stigma for everyone else. It gives other enthusiasts a bad name. It's people who break the law without care that bring down the authroites on everyone. Take street racing is some pats or So Cal, for example. In San Deigo, whether you street race or not, cops will harass you. People may not have given a care at first about illegel street racing, saying the same thing..."t is your car, you can get fined or go to jail if you want..."
However, now that mostly everyone is harassed now by the police there, becasue they just because they drive an import, it has effected everyone. People broke the law without care, and now everyone with a similer type of car pays the price. I'd much rather have people stay legel and do it right. It's no fun when everyone gets a negative stigma because of the actions of a few.
termitesgraffix
06-02-2005, 07:43 AM
Good point... I understand your stand, and respect it fully. I feel your pain on the matter as well. The gap has bridged from imports to us german imports as well, but what can we do about it... it happened. Alot of the meets around here were 100% legit and given permission to be there... then a few "ricers" came through peeling out and showing off and guess who got in trouble and got the blame? Yep, those who were standing outside their cars just hanging and talking and didn't even know the people who came through.
I simply gave advice to a question asked... I don't ignore anyone no matter what. I guess I am spoiled for none of my cars follow these guidelines. I have a historic, a street rod titled, and a few other cars, and none of my cars have cats. But I am allowed to not. This is why I don't care. As for your concern... Sorry to have harmed your rep in any way, my intensions are purely for advice and help to someone who is going to cut it off reguardless. I am all about doing things right or at least "right" the first time and not half ass gimp style. So I give advice to at least help with someone doing it "right".
-Peace
I simply gave advice to a question asked... I don't ignore anyone no matter what. I guess I am spoiled for none of my cars follow these guidelines. I have a historic, a street rod titled, and a few other cars, and none of my cars have cats. But I am allowed to not. This is why I don't care. As for your concern... Sorry to have harmed your rep in any way, my intensions are purely for advice and help to someone who is going to cut it off reguardless. I am all about doing things right or at least "right" the first time and not half ass gimp style. So I give advice to at least help with someone doing it "right".
-Peace
eckoman_pdx
06-03-2005, 05:12 PM
I have a historic, a street rod titled, and a few other cars, and none of my cars have cats. But I am allowed to not. This is why I don't care. As for your concern... Sorry to have harmed your rep in any way, my intensions are purely for advice and help to someone who is going to cut it off reguardless. I am all about doing things right or at least "right" the first time and not half ass gimp style. So I give advice to at least help with someone doing it "right".
-Peace
First off, harmed my rep? What, over a cat? I have no clue where that came from, or why you seem to feel the need to say such things. Seems like a dig to me, but whatever, it has nothing to do with me or anything like that, so I don't know where this "harmed your rep" talk came in. I've been here WAAAYYYY TO LONG to have telling someone to OBAY FEDERAL LAW harm my rep. If telling people to obay the law harms your rep, then this world is a sick place. Taking cheap shots and digs at people with comments like that only harms your rep, not mine.
Which brngs up my orginal point, he HAS to have them, so it's not an option to not run them. You DON'T have to have a cat, your cars are most likly old enough they are exempt from emissions.
LilLaObOi50 has a 97 Civic DX, this IS NOT exempt from Emissions. It HAS to have a Cat on it, unlike the older cars you have. Whereas having no cat IS a LEGEL option for YOU, it IS NOT for him. Telling him how to cat off his cat is telling him how NOT to do it right the first time. Doing is RIGHT would be putting on a high flow cat, not ILLEGALLY REMOVING IT. Giving him advice on how to do it right would be telling him to keep the stock cat or get a good street legel high flow one like from random tech. Telling him HOW to do it right would be telling him HOw to weld it on or how to bolt it on,not how to cut it off, break federal law and telling him how to get away with it. Since when is [b]telling someone how to break federal law and get away with it[/b telling someone how to do it right? Putting on a street legel cat is NOT a half ass gimp style when removing it is a VIOLATION OF FEDERAL LAW.
You seem to be intent on taking digs with comments such as above.
I don't belive in helping people break the law in such a fashion. Never have never will, and I have no respect for it. Neither do the authorities.
You might not care about a cat on your cars, but thats because most of your cars don't seem to have to have emisions, as they are old enough. It's legel to not run a cat, heck, cat's weren't around when some of them were made.
LilLaObOi50 has a 97 Civic DX, and HAS to have a cat. It's federal law, and it s a violation of federal law to remove it. Disregard for federal law, and telling people HOW TO BREAK THE LAW and HOW TO GET AWAY WITH IT is NOT DOING DOING IT RIGHT. Telling soome to do the RIGHT TAHING and get a high flow cat is NOT A HALF_ASS GIMP ASS WAY.
If you have a blatent disregard for Federal Law like like you seem to display, you're going to find yourself in hot water often over the coruse of your life.
-Peace
First off, harmed my rep? What, over a cat? I have no clue where that came from, or why you seem to feel the need to say such things. Seems like a dig to me, but whatever, it has nothing to do with me or anything like that, so I don't know where this "harmed your rep" talk came in. I've been here WAAAYYYY TO LONG to have telling someone to OBAY FEDERAL LAW harm my rep. If telling people to obay the law harms your rep, then this world is a sick place. Taking cheap shots and digs at people with comments like that only harms your rep, not mine.
Which brngs up my orginal point, he HAS to have them, so it's not an option to not run them. You DON'T have to have a cat, your cars are most likly old enough they are exempt from emissions.
LilLaObOi50 has a 97 Civic DX, this IS NOT exempt from Emissions. It HAS to have a Cat on it, unlike the older cars you have. Whereas having no cat IS a LEGEL option for YOU, it IS NOT for him. Telling him how to cat off his cat is telling him how NOT to do it right the first time. Doing is RIGHT would be putting on a high flow cat, not ILLEGALLY REMOVING IT. Giving him advice on how to do it right would be telling him to keep the stock cat or get a good street legel high flow one like from random tech. Telling him HOW to do it right would be telling him HOw to weld it on or how to bolt it on,not how to cut it off, break federal law and telling him how to get away with it. Since when is [b]telling someone how to break federal law and get away with it[/b telling someone how to do it right? Putting on a street legel cat is NOT a half ass gimp style when removing it is a VIOLATION OF FEDERAL LAW.
You seem to be intent on taking digs with comments such as above.
I don't belive in helping people break the law in such a fashion. Never have never will, and I have no respect for it. Neither do the authorities.
You might not care about a cat on your cars, but thats because most of your cars don't seem to have to have emisions, as they are old enough. It's legel to not run a cat, heck, cat's weren't around when some of them were made.
LilLaObOi50 has a 97 Civic DX, and HAS to have a cat. It's federal law, and it s a violation of federal law to remove it. Disregard for federal law, and telling people HOW TO BREAK THE LAW and HOW TO GET AWAY WITH IT is NOT DOING DOING IT RIGHT. Telling soome to do the RIGHT TAHING and get a high flow cat is NOT A HALF_ASS GIMP ASS WAY.
If you have a blatent disregard for Federal Law like like you seem to display, you're going to find yourself in hot water often over the coruse of your life.
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