Corsa With Headers - No Cats - ZR-1 Net Registry Forums

ScottZ95ZR1 · 10-23-2010

Okay guys, sorry for yet another exhaust question thread.

I know Corsa is somewhere at the top of the aftermarket list for no resonance and I know it will be louder with headers than without.

Will a car running Corsa with headers and no cats still enjoy drone-free highway cruising or does lack of cats turn on the resonance?

I ask the question because I just read a listserve email that advised Corsa representatives state the system was specifically designed for use with cats.

Appreciate any feedback.

LGAFF · 10-23-2010

My 90 has Corsa with headers and no cats, it is much quieter than the borla setup on my 92, and the 90 with Corsa has 2" headers.

IowaZR-1 · 10-23-2010

I'm thinking that Corsa in saying that they used only cat equipped cars for their design of their patented "RSC" technology for each application. Depending on the cat's construction I can see where there could be some issues and not get the resonance eliminated with the removal of the cats, but from LGAFF's post and other's it looks like our application is good to go with cat removal. I want some 2'' headers!!!!

ZZZZZR1 · 10-23-2010

Scott,

I have SW headers, no cats and corsa...

There is some resonance, but not much.

Good choice!

David

ScottZ95ZR1 · 10-23-2010

Thanks much for the feedback guys!

RICKYRJ1 · 10-23-2010

Hey " beam me up Scotty " I'm running that set up and it is perfectly fine, you will like it

Kevin · 10-24-2010

I've driven a corsa/no cats/headers car before and while there was no resonance in the car, I couldn't stand the sound behind it. We were driving down to BG together so I got to hear it from behind, I'm not a fan

ScottZ95ZR1 · 10-24-2010

Thanks Ricky and Daryll - more of what I hoped to hear.

Right now I'm kind of with Kevin to be honest. I haven't been a Corsa fan with regards to it's sound from the rear but the car I bought has a brand new Corsa system installed.
I know several have yanked the B&B (and other systems) and moved to Corsa, so I'm at least going to give it a chance.

I had the B&B on my last car and loved it's sound outside the car but with the resonator the drone was quite annoying.
After installing headers and replacing the resonator with an X-pipe it was greatly improved but there was still drone.

So, if the Corsa is relatively drone-free it may be a welcome trade-off. And I know some believe it to be the better system from a performace perspective.
My concern was the possibility a decision to go headers sans cats would actually create a drone issue with the system.

I'm hoping I like it!

Kevin · 10-24-2010

there is no resonance with the corsa/headers/no cats.

Kevin · 10-24-2010

i was looking for a video I used to have called "zr-1 week" in it there was a section of all the exhausts being run on the dyno. seems my old computer ate it

found it on youtube

http://www.youtube.com/watch?v=bkOSJ...ext=1&index=11

10-23-2010	#1
ScottZ95ZR1 Join Date: Mar 2008 Location: Pendleton, IN Posts: 659	Corsa With Headers - No Cats Okay guys, sorry for yet another exhaust question thread. I know Corsa is somewhere at the top of the aftermarket list for no resonance and I know it will be louder with headers than without. Will a car running Corsa with headers and no cats still enjoy drone-free highway cruising or does lack of cats turn on the resonance? I ask the question because I just read a listserve email that advised Corsa representatives state the system was specifically designed for use with cats. Appreciate any feedback.

10-23-2010	#2
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,194	Re: Corsa With Headers - No Cats My 90 has Corsa with headers and no cats, it is much quieter than the borla setup on my 92, and the 90 with Corsa has 2" headers. __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

10-23-2010	#3
IowaZR-1 Join Date: Feb 2006 Location: Iowa aka "one big cornfield" Posts: 341	Re: Corsa With Headers - No Cats I'm thinking that Corsa in saying that they used only cat equipped cars for their design of their patented "RSC" technology for each application. Depending on the cat's construction I can see where there could be some issues and not get the resonance eliminated with the removal of the cats, but from LGAFF's post and other's it looks like our application is good to go with cat removal. I want some 2'' headers!!!!

10-23-2010	#4
ZZZZZR1 Banned BANNED Join Date: Oct 2006 Location: MD Posts: 3,690	Re: Corsa With Headers - No Cats Scott, I have SW headers, no cats and corsa... There is some resonance, but not much. Good choice! David

10-23-2010	#5
ScottZ95ZR1 Join Date: Mar 2008 Location: Pendleton, IN Posts: 659	Re: Corsa With Headers - No Cats Thanks much for the feedback guys!

10-23-2010	#6
RICKYRJ1 Join Date: Dec 2005 Location: Tinton Falls, NJ Posts: 1,177	Re: Corsa With Headers - No Cats Hey " beam me up Scotty " I'm running that set up and it is perfectly fine, you will like it

10-24-2010	#7
Kevin Join Date: Jun 2005 Location: pittsburgh Posts: 4,632	Re: Corsa With Headers - No Cats I've driven a corsa/no cats/headers car before and while there was no resonance in the car, I couldn't stand the sound behind it. We were driving down to BG together so I got to hear it from behind, I'm not a fan __________________ It's not the car, it's the people - Doug Johnson 90 r/r "KEYS ON" nick named "T.L.B"

10-24-2010	#10
Kevin Join Date: Jun 2005 Location: pittsburgh Posts: 4,632	Re: Corsa With Headers - No Cats i was looking for a video I used to have called "zr-1 week" in it there was a section of all the exhausts being run on the dyno. seems my old computer ate it found it on youtube http://www.youtube.com/watch?v=bkOSJ...ext=1&index=11 __________________ It's not the car, it's the people - Doug Johnson 90 r/r "KEYS ON" nick named "T.L.B" Last edited by Kevin; 10-24-2010 at 01:25 PM.