Pup Cats??????
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Drifting
Joined: Nov 2003
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Pup Cats??????
At an event for my Vette club several people insisted that My 2000 a4 was originally equiped with somthing called Pup Cats? They say it was a second set of catylitic converters in the "H" pipe. I removed my "H" pipe when I changed up to the B&B's and Borla "X" Pipe and could swear there was nothing in there. As I will be moving to California soon I am now concerned about Emissions and wethere i am gonna Have to do somthing about it 
Does anyone know anything about these alledged "Pup Cat's"
Does anyone know anything about these alledged "Pup Cat's"
Team Owner
Joined: Aug 2003
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Originally Posted by bobsY2Kvette
At an event for my Vette club several people insisted that My 2000 a4 was originally equiped with somthing called Pup Cats? They say it was a second set of catylitic converters in the "H" pipe. I removed my "H" pipe when I changed up to the B&B's and Borla "X" Pipe and could swear there was nothing in there. As I will be moving to California soon I am now concerned about Emissions and wethere i am gonna Have to do somthing about it
Does anyone know anything about these alledged "Pup Cat's"
Does anyone know anything about these alledged "Pup Cat's"
The pup cats are between the exhaust manifolds and the main cats. If you look under the car, they will be just off the manifolds as they start downward.
Your friends are right about the pup cats. They are just too far back in the exhaust system in describing the location.
Last edited by '06 Quicksilver Z06; Jul 18, 2004 at 03:31 PM.
Burning Brakes
Joined: Nov 2002
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From: Cologne Germany
In 2000 only CA models came with additional pup cats, in order to meet the LEV. In 2001 pup cats were added to all models. From 2002 onwards only the Z06 got freed from the pups.
Source: http://www.c5registry.com/2k2z06/page2.htm
Source: http://www.c5registry.com/2k2z06/page2.htm
Le Mans Master
Joined: Jan 2002
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From: Camden County NJ
The only way you will not have the pulp cats is if you have LT headers installed. Are you the original owner or was your Vette used? If it's used then maybe the previous owner had some mod work done.
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From: Charlotte NC
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Originally Posted by CR555
In 2000 only CA models came with additional pup cats, in order to meet the LEV. In 2001 pup cats were added to all models. From 2002 onwards only the Z06 got freed from the pups.
Source: http://www.c5registry.com/2k2z06/page2.htm
Source: http://www.c5registry.com/2k2z06/page2.htm
Burning Brakes
Joined: Nov 2002
Posts: 862
Likes: 1
From: Cologne Germany
That's correct. In the article John Juriga, GM Powertrain’s Assistant Chief Engineer for Gen III Passenger Car Engines, says:
"In 2000, we had to meet the LEV (low emissions vehicle) here in California, so we added close-coupled convertors up front (of the regular cats) on the California package–our "pups" as we call ’em."
Another quote from the article:
"To meet LEV for MY00 and keep Corvette saleable in California, Juriga’s team of engineers had to make cat light-off happen sooner. The solution for ’00 California cars and all ’01s, because LEV went nationwide at that point, was to move the catalytic reaction closer to the exhaust heat by adding small, close-coupled, catalytic convertors or "pup cats" upstream of the under-floor cats, near the exhaust manifolds."
"In 2000, we had to meet the LEV (low emissions vehicle) here in California, so we added close-coupled convertors up front (of the regular cats) on the California package–our "pups" as we call ’em."
Another quote from the article:
"To meet LEV for MY00 and keep Corvette saleable in California, Juriga’s team of engineers had to make cat light-off happen sooner. The solution for ’00 California cars and all ’01s, because LEV went nationwide at that point, was to move the catalytic reaction closer to the exhaust heat by adding small, close-coupled, catalytic convertors or "pup cats" upstream of the under-floor cats, near the exhaust manifolds."
Last edited by CR555; Jul 18, 2004 at 05:23 PM.
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In 2000 only CA models came with additional pup cats, in order to meet the LEV. In 2001 pup cats were added to all models. From 2002 onwards only the Z06 got freed from the pups.
