C5 exhaust
Race Director
Joined: Mar 2008
Posts: 12,413
Likes: 502
From: Rio Rancho NM
either 2 or 4..
http://forums.corvetteforum.com/c5-t...ls-within.html
97 - 99 have 1 main cat on each exhaust.
The majority of 00 are just like 97 - 99.
NE and CA Emissions 00 model year C5's have pre-cats at the end of the exhaust header.
2001 - 2003 LS1's and 2001 LS6 have the same precat configuration as 00 NE and CA Emissions.
2002 - 2003 LS6 removed the precats and went with a larger more efficient set of main cats.
If you remove the precats, you do not need O2 simulators. If you remove the main cats you do need after cat O2 simulators.
The C5 has O2 sensors before the main cats that perform engine feeback control during non-wot. And a set after the main cats, soley to determine main cat functionlity.
http://forums.corvetteforum.com/c5-t...ls-within.html
97 - 99 have 1 main cat on each exhaust.
The majority of 00 are just like 97 - 99.
NE and CA Emissions 00 model year C5's have pre-cats at the end of the exhaust header.
2001 - 2003 LS1's and 2001 LS6 have the same precat configuration as 00 NE and CA Emissions.
2002 - 2003 LS6 removed the precats and went with a larger more efficient set of main cats.
If you remove the precats, you do not need O2 simulators. If you remove the main cats you do need after cat O2 simulators.
The C5 has O2 sensors before the main cats that perform engine feeback control during non-wot. And a set after the main cats, soley to determine main cat functionlity.
Instructor
Joined: Jun 2012
Posts: 185
Likes: 9
From: Ephrata PA
Not to hijack the thread but I have a similar question about the exhaust set up. I use to be a Mustang guy so I understood the exhaust configurations (x or h pipe with shorty vs longtube headers).
I will probably want to get an off-road x pipe before I put longtubes on the corvette so my question is if I get an x pipe now will it work down the road with future long tubes or will I have to purchase a matching x pipe that will hook up to long tube headers?
I will probably want to get an off-road x pipe before I put longtubes on the corvette so my question is if I get an x pipe now will it work down the road with future long tubes or will I have to purchase a matching x pipe that will hook up to long tube headers?
Drifting
Joined: Aug 2013
Posts: 1,899
Likes: 212
From: Christchurch, New Zealand
Not to hijack the thread but I have a similar question about the exhaust set up. I use to be a Mustang guy so I understood the exhaust configurations (x or h pipe with shorty vs longtube headers).
I will probably want to get an off-road x pipe before I put longtubes on the corvette so my question is if I get an x pipe now will it work down the road with future long tubes or will I have to purchase a matching x pipe that will hook up to long tube headers?
I will probably want to get an off-road x pipe before I put longtubes on the corvette so my question is if I get an x pipe now will it work down the road with future long tubes or will I have to purchase a matching x pipe that will hook up to long tube headers?
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Joined: Mar 2001
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Good info, Chicago1. 
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