Cat Conv Removal? Help
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Instructor
Joined: Aug 2004
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Cat Conv Removal? Help
OK, just got my vette inspected and found out that since my vette is a '95, the county in which I live does not test it for emissions. When removing the cats, what happens with the 02 sensors? Are they removed too? If so, will it throw a code? If no removal, then how is a code not thrown? If code is thrown, what do I do? Are there any other foreseeable issues with removing the cat converters? Also, does removing the cats make the sound louder? If so, is it noticablely louder or just more grumble? Thanks for any help on this decision.
Team Owner
Joined: Aug 2000
Posts: 40,156
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From: San Pedro CA
I am going to ask nicely... don't remove them.
Here are the reasons:
1) Just because your area doesn't test for emissions NOW doesn't mean it won't happen later.
2) It will be loud... seriously loud. You will get droned into submission.
3) Air Quality. I prefer it when people don't pollute for no good reason.
4) Power... you will gain MAYBE 5hp my removing them. They are that high flow.
Here are the reasons:
1) Just because your area doesn't test for emissions NOW doesn't mean it won't happen later.
2) It will be loud... seriously loud. You will get droned into submission.
3) Air Quality. I prefer it when people don't pollute for no good reason.
4) Power... you will gain MAYBE 5hp my removing them. They are that high flow.
Thread Starter
Instructor
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Wow. Thanks for the info. They will stay put then. You are right, there is no reason to pollute for all of those reasons. Thank you for not letting me make a big mistake. 5hp and all of the noise...not worth it.
Team Owner
Joined: Aug 2000
Posts: 40,156
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From: San Pedro CA
anytime!
It really isn't worth it... there are some who will get all uppity about the govrn'ment messing with out rights, but when it comes down to OUR air, I think ones rights to cleaner air are more important than someone getting 5 or 10 more horsepower.
If you want to upgrade, the high flow units are really nice... and take little or no hp.
Depending on where you live, some headers and high flow cats would rock.
It really isn't worth it... there are some who will get all uppity about the govrn'ment messing with out rights, but when it comes down to OUR air, I think ones rights to cleaner air are more important than someone getting 5 or 10 more horsepower.
If you want to upgrade, the high flow units are really nice... and take little or no hp.
Depending on where you live, some headers and high flow cats would rock.
Thread Starter
Instructor
Joined: Aug 2004
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You west coast guys, geeesh! Next thing I'll probably hear from you is that it would be nice to have clean water to drink. What's wrong with Dasani? It tastes just fine to me. The water in my hometown of Portsmouth, OH puts a nice glow on them folks' teeth, ain't nothin wrong with that! Don't worry the cats are still staying put (based on sound/performance conclusion) 
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Thread Starter
Instructor
Joined: Aug 2004
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Originally Posted by Lichen
I was going to say that if you remove them, Bogus and I will come over and beat you upside the head with a 2x4. Get some high-flow cats like Catco or Random-Tech.
Team Owner
Joined: Aug 2000
Posts: 40,156
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From: San Pedro CA
I agree with Tim... the catcos, RTs and Carsounds are nice, but only if you need to replace, or are doing headers.
As it stands, leave them stock.
I will say this, after about 120k miles, the stock cats are on life support...
As it stands, leave them stock.
I will say this, after about 120k miles, the stock cats are on life support...
Le Mans Master
Joined: Jan 2006
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From: Woodstock Georgia
Originally Posted by timvette
You west coast guys, geeesh! Next thing I'll probably hear from you is that it would be nice to have clean water to drink. What's wrong with Dasani? It tastes just fine to me. The water in my hometown of Portsmouth, OH puts a nice glow on them folks' teeth, ain't nothin wrong with that! Don't worry the cats are still staying put (based on sound/performance conclusion)
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
garvette - the 91 exhaust is a pig compared to the 92+ exhaust.
Do us all a favour, put on some long tubes, bullet cats and an xpipe. you will get all the noise you want, and we will get the clean air we want. Win-win!
Do us all a favour, put on some long tubes, bullet cats and an xpipe. you will get all the noise you want, and we will get the clean air we want. Win-win!
Team Owner
Joined: Aug 2000
Posts: 40,156
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From: San Pedro CA
Originally Posted by aminnich
We all know the rivers in Ohio are clean. Of course we also haven't forgotten about the Cuyahoga River in Cleveland actually catching fire and burning down the RR bridges over it. What was that, about 1978 or so? If fish could walk they'd all be out on I71 hitch hiking south.