exhaust design help...cats
Thread Starter
Burning Brakes
Joined: Aug 2000
Posts: 1,146
Likes: 2
From: Albuquerque NM
exhaust design help...cats
The car is currently setup for 2149 hooker headers, hooker Y-pipe, straight pipe, modified stock Y-pipe, hooker aerochamber mufllers
Looking for personal results for adding cats back into the mix.
1) What do after market cats actually flow
2) Is there room to put two cats with the hooker headers?I
3) what woud be the hp penalty for installing just a single cat where the old 3-way cat used to be?
Looking for personal results for adding cats back into the mix.
1) What do after market cats actually flow
2) Is there room to put two cats with the hooker headers?I
3) what woud be the hp penalty for installing just a single cat where the old 3-way cat used to be?
Team Owner
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
Go here for a comparison on 2.5" cats. I haven't found any info on 3" ones, but comparing the mfg vs. price vs. flow probably carries over for the most part.
http://forums.corvetteforum.com/show...2&page=2&pp=20
Also remember that for tubes...
2.1+2.1 = 3
2.5+2.5 = 3.5
3 + 3 = 4.25
A single 3" will flow about the same as a dual 2.25.
http://forums.corvetteforum.com/show...2&page=2&pp=20
Also remember that for tubes...
2.1+2.1 = 3
2.5+2.5 = 3.5
3 + 3 = 4.25
A single 3" will flow about the same as a dual 2.25.
Last edited by CentralCoaster; Oct 19, 2005 at 01:18 AM.
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Originally Posted by ZD1
The car is currently setup for 2149 hooker headers, hooker Y-pipe, straight pipe, modified stock Y-pipe, hooker aerochamber mufllers
Looking for personal results for adding cats back into the mix.
1) What do after market cats actually flow
2) Is there room to put two cats with the hooker headers?I
3) what woud be the hp penalty for installing just a single cat where the old 3-way cat used to be?
Looking for personal results for adding cats back into the mix.
1) What do after market cats actually flow
2) Is there room to put two cats with the hooker headers?I
3) what woud be the hp penalty for installing just a single cat where the old 3-way cat used to be?
Here is what my setup looks like:
Safety Car
Joined: Aug 1999
Posts: 4,931
Likes: 3
From: Fort Lauderdale FL
Originally Posted by tjwong
Here is what my setup looks like:
That looks nice ! However I notice you don't have the black underside protector on the car. Did you remove all of this ? My whole floor pan on the underside of the car has what seems to be a black rough like surface that seems to be somewhat of an underside carriage protector I guess from rust or the likes.
