Catalytic converter flow question.
Thread Starter
Pro
Joined: Jun 2003
Posts: 702
Likes: 0
From: Castle Rock Co
Catalytic converter flow question.
Does the 2002 z06 cat flow better than the main cat on the regular cars?
In other words if you have a h-pipe without pre cats, does a 2002+ Z06 pipe still flow better?
In other words if you have a h-pipe without pre cats, does a 2002+ Z06 pipe still flow better?
Burning Brakes
Joined: Apr 2003
Posts: 908
Likes: 4
From: TROY MI
Re: Catalytic converter flow question. (Heretic)
This is just a guess but I would think that the 2001/2004 cats without the pre cats would flow better.My reasoning goes like this. The Z06 cats must do the work of 4 cats and hence must have more surface area to clean up the exhaust .This will give more restriction. Just my guess.
Melting Slicks
Joined: Oct 2001
Posts: 2,075
Likes: 0
From: Central NJ
Re: Catalytic converter flow question. (yankeevetteconvert)
The pre-cats were only added for cold-start emissions as they warm up quicker than the main cats. The 2 cats don't have to do "the work of 4" as stated above. The dimensions for the main cats appear to be similar between the '01 and '02 up Z06 cars that I've seen. I'll be ditching all 4 soon when I install my longtubes, track numbers will tell me how much of a restriction they really are.
Race Director
Joined: Sep 2001
Posts: 13,292
Likes: 0
From: Hockessin Delaware
Re: Catalytic converter flow question. (Heretic)
'02 Z06 cats do flow better, check out http://www.idavette.net/hib/02ls6/page3.htm
and http://www.c5registry.com/2k2z06/page2.htm
[Modified by DsC5, 11:03 PM 12/20/2003]
and http://www.c5registry.com/2k2z06/page2.htm
[Modified by DsC5, 11:03 PM 12/20/2003]
Burning Brakes
Joined: Apr 2003
Posts: 908
Likes: 4
From: TROY MI
Re: Catalytic converter flow question. (DsC5)
'02 Z06 cats do flow better, check out http://www.idavette.net/hib/02ls6/page3.htm
and http://www.c5registry.com/2k2z06/page2.htm
[Modified by DsC5, 11:03 PM 12/20/2003]
and http://www.c5registry.com/2k2z06/page2.htm
[Modified by DsC5, 11:03 PM 12/20/2003]
Thread Starter
Pro
Joined: Jun 2003
Posts: 702
Likes: 0
From: Castle Rock Co
Re: Catalytic converter flow question. (yankeevetteconvert)
Thats what I was thinking, that if the Z06 cats are 3-way, and the main cats on the non-z06 cars are 2 way, then the non-z06 main cats w/o the pups will flow better than the z06 cats.
I wondering this because I have a 2002 h-pipe, non z06, that has the pups, and I am thinking that with the pups eliminated that I ought to get decent flow, at least enough to support 375RWHP through 02 style exhaust manifolds.
I wondering this because I have a 2002 h-pipe, non z06, that has the pups, and I am thinking that with the pups eliminated that I ought to get decent flow, at least enough to support 375RWHP through 02 style exhaust manifolds.
