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Old 02-21-2018, 09:12 PM   #1
kinpin
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Corsa Catback Exhaust vs stock

I am looking for a way to make my car more efficient and lower boost presser I am at 14 . I am currently running stock manifold and no cats .
I am going to be running kooks headers , off road pips ( catless ) and stock exhaust . My question is ..Dose anyone know if a Corsa Catback exhaust flows better then the stock ? and in retune give even better air flow ?
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Old 02-21-2018, 10:01 PM   #2
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I just responded to a post regarding Corsa. The stock exhaust flows good and I don't think aftermarket will help much. Your biggest gain is from the addition of headers and removing the cats. I have a Corsa catback and my setup is similar to yours. Mine is Loud. I mean really loud. During a cold start it will hurt your ears if you stand behind the car. Brings lots of unwanted attention. Corsa was reasonably quiet until I did the same mods you are proposing. I'm cutting off the Corsa mufflers and installing a Flowmaster Force 2 axle back to try to get rid of some of the noise. Hope this helps and gives you a little more information.
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Old 02-21-2018, 10:07 PM   #3
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Quote:
Originally Posted by patternpilot View Post
I just responded to a post regarding Corsa. The stock exhaust flows good and I don't think aftermarket will help much. Your biggest gain is from the addition of headers and removing the cats. I have a Corsa catback and my setup is similar to yours. Mine is Loud. I mean really loud. During a cold start it will hurt your ears if you stand behind the car. Brings lots of unwanted attention. Corsa was reasonably quiet until I did the same mods you are proposing. I'm cutting off the Corsa mufflers and installing a Flowmaster Force 2 axle back to try to get rid of some of the noise. Hope this helps and gives you a little more information.
It dose thank you
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Old 02-22-2018, 08:47 AM   #4
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I had the Corsa on my 2013 ZL1, with kooks. It scared people when I started it up. It was loud...really loud. I traded a guy for the stock NPP..much better. Actually feels a little more responsive. Good luck
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Old 02-22-2018, 10:36 AM   #5
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Going Headers/No Cats/and any aftermarket muffler is definitely not for everyone. I wouldn't even put Corsa as the loudest setup. But if you want to keep it more subdued, the NPP factory exhaust flows just fine for I'd say up to 750-800 RWHP. After that point, you may want to think about a 3" or Diverters if you goals are even bigger.
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Old 02-22-2018, 05:02 PM   #6
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I am running Kooks with no cats and the factory NPP exhaust with the fuse pulled. It is loud enough to get a cops attention. As me how I know. HAHA. I may put the fuse back in to make it a little quieter. I am running a set of noweeds diverters so if I want loud I can just open them up. The cam sounds nice rumbling through them though.
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Old 02-23-2018, 12:29 AM   #7
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Quote:
Originally Posted by patternpilot View Post
I just responded to a post regarding Corsa. The stock exhaust flows good and I don't think aftermarket will help much. Your biggest gain is from the addition of headers and removing the cats. I have a Corsa catback and my setup is similar to yours. Mine is Loud. I mean really loud. During a cold start it will hurt your ears if you stand behind the car. Brings lots of unwanted attention. Corsa was reasonably quiet until I did the same mods you are proposing. I'm cutting off the Corsa mufflers and installing a Flowmaster Force 2 axle back to try to get rid of some of the noise. Hope this helps and gives you a little more information.
Have you thought about just putting in a magnaflow resonated x pipe
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Old 02-23-2018, 08:29 AM   #8
Crash76
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I put a magnaflow in and it quieted it down , but didnt like the sound , went to regular magnaflow xpipe

Ive been thinking about having removable bullet mufflers installed where the cats go for when im at the track
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Old 02-23-2018, 08:41 AM   #9
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Originally Posted by Crash76 View Post
I put a magnaflow in and it quieted it down , but didnt like the sound , went to regular magnaflow xpipe

Ive been thinking about having removable bullet mufflers installed where the cats go for when im at the track
I have had a magnaflow resonated x-pipe sitting in my storage for a couple months now. I will be putting it on soon so I can get my ticket signed off.
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