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Old 10-23-2010   #1
ScottZ95ZR1
 
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Default 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.
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Old 10-23-2010   #2
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Default 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.
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Old 10-23-2010   #3
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Default 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!!!!
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Old 10-23-2010   #4
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Default 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
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Old 10-23-2010   #5
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Default Re: Corsa With Headers - No Cats

Thanks much for the feedback guys!
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Old 10-23-2010   #6
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Default 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
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Old 10-23-2010   #7
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Default Re: Corsa With Headers - No Cats

Im running this setup with Jeal Headers and MagnaFlow Hi Flow cats (Beleive me cats they are not) with a Corsa system. No resonance. Will be the same with your car
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91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat

90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat

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Old 10-24-2010   #8
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Default 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
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Old 10-24-2010   #9
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Default Re: Corsa With Headers - No Cats

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!
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Old 10-24-2010   #10
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Default Re: Corsa With Headers - No Cats

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