Questions concerning exhaust system
Thread Starter
Race Director
Joined: Oct 2005
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From: Bay Area Ca.
Questions concerning exhaust system
I want to stay GM warranty legal and California smog legal. Can I install headers and hi flow cats with Corsa exhaust, and meet my requirments? If so will I need a tune? If not how much can I do and still stay within my two requirments? What is meant by long tube headers, and how does it relate to the cats etc. If I just go with Corsa Sport will I need a tune or program edit?
Thanks for any help
Thanks for any help
Melting Slicks
Joined: Feb 2002
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From: Anderson, SC
St. Jude Donor '06-'07-'08
Originally Posted by Boomer111
I want to stay GM warranty legal and California smog legal. Can I install headers and hi flow cats with Corsa exhaust, and meet my requirments? If so will I need a tune? If not how much can I do and still stay within my two requirments? What is meant by long tube headers, and how does it relate to the cats etc. If I just go with Corsa Sport will I need a tune or program edit?
Thanks for any help
Thanks for any help
If you go with headers and exhaust I would go with a tune. You may not have to but if I was going through the cost and trouble of installing headers I would get a tune to squeeze out as many horses as possible. You do not need a tune with the corsa exhaust, but a tune with any combination will improve your performance.
Team Owner
Joined: Apr 2005
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From: YOU SEE ... I'M NOT CRAZY ...I'M JUST AHEAD OF THE CURVE
St. Jude Donor '09-'10
Warranty - you can make any mods to the car as long as they don't contribute to the cause of a warantee claim. It would be hard to find a reason an exhaust system caused anything mechanical ... now a fire or something, that is different .. just make sure it is installed properly. I have never heard of any exhaust system a reason for cause to not honor a warantee claim. Now putting a supercharger in and tearing up a rearend - that's different.
Emissions - Long tube headers extend beyond (32" for LG for example... I think ... I'm sure someone can correct me if I'm wrong) normal exhaust manifold toward rear of car and are then followed by the cats ... by relocating the cats from original manu location, some find this a technical violation of fed emmission law as it alters OEM design ... as far as passing sniff test - no problem. CA I am not sure.
I'd tune the car when you get it in its final configuration you want for a while .. unless you don't mind the extra $ and time.
I am sure more people can follow with more precise info.
Here are some pics of "long tubes" - notice where they bend kinda like 90 degrees ... that is short of where the original cats were
http://forums.corvetteforum.com/show...4&forum_id=101
Emissions - Long tube headers extend beyond (32" for LG for example... I think ... I'm sure someone can correct me if I'm wrong) normal exhaust manifold toward rear of car and are then followed by the cats ... by relocating the cats from original manu location, some find this a technical violation of fed emmission law as it alters OEM design ... as far as passing sniff test - no problem. CA I am not sure.
I'd tune the car when you get it in its final configuration you want for a while .. unless you don't mind the extra $ and time.
I am sure more people can follow with more precise info.
Here are some pics of "long tubes" - notice where they bend kinda like 90 degrees ... that is short of where the original cats were
http://forums.corvetteforum.com/show...4&forum_id=101
Last edited by VetVetter; Jan 5, 2006 at 09:03 PM.
Race Director
Joined: Mar 2005
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From: Austin Texas
California law does not allow cat replacement except with factory cats in original location. Any exhaust or intake change must have C.A.R.B. approval before it's legal in California. Theoretically you won't pass the visual inspection without CARB replacement documentation regardless of passing a sniffer test.
Heel & Toe
Joined: Jul 2005
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Originally Posted by haljensen
California law does not allow cat replacement except with factory cats in original location. Any exhaust or intake change must have C.A.R.B. approval before it's legal in California. Theoretically you won't pass the visual inspection without CARB replacement documentation regardless of passing a sniffer test.
http://www.melroset-tops.com/headers_&_exhaust.htm
Race Director
Joined: Oct 2004
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Originally Posted by LD RUNR
Melrose T-Top says that their long tubes meet California ARB requirements.
http://www.melroset-tops.com/headers_&_exhaust.htm
http://www.melroset-tops.com/headers_&_exhaust.htm
"Please note that it is illegal to remove a properly functioning catalytic converter and that aftermarket catalytic converters are not legal for installation in California on OBD II vehicles (some 1994 & 1995, and all 1996 and later vehicles)."
Ask Melrose for the CARB numbers for their C6 headers and cats. They won't have one.
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From: Name calling begins in the absence of fact and reason
Originally Posted by shopdog
They say that, but Random Technology, who makes the cats sold by Melrose says on their website,
"Please note that it is illegal to remove a properly functioning catalytic converter and that aftermarket catalytic converters are not legal for installation in California on OBD II vehicles (some 1994 & 1995, and all 1996 and later vehicles)."
Ask Melrose for the CARB numbers for their C6 headers and cats. They won't have one.
"Please note that it is illegal to remove a properly functioning catalytic converter and that aftermarket catalytic converters are not legal for installation in California on OBD II vehicles (some 1994 & 1995, and all 1996 and later vehicles)."
Ask Melrose for the CARB numbers for their C6 headers and cats. They won't have one.
sigh
