C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Corsa Outer Tips Functioning Video Proof.

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Old Jul 28, 2010 | 12:26 PM
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Default Corsa Outer Tips Functioning Video Proof.

Here Again..., is a Video I made years ago showing proof that Both Corsa exhaust tips do Function.

Many members here Insist that the outer tips are dummy's, probably confused by this picture which if you look very closely, you can see a small diameter exhaust tube (circled) that flows exhaust inside and Around the baffle and exits out of the outer tip. This exhaust flow is not for Performance but, is part of the muffler design to eliminate Resonance.



Anyways, This Corsa system is installed on my "91" L98. The tennis ***** are a perfect fit and are pressed in tight.

Here you can see the exhaust flow by watching the attached Ribbons.


Here you can see the Primary tips blocked by the Tennis ***** and the Outer tips still flowing exhaust. This exhaust flow (or leak) is very minimal and is used in part to help eliminate Resonance.

Last edited by GKK; Jul 29, 2010 at 09:18 PM.
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Old Jul 28, 2010 | 03:54 PM
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Not to be controversial...but...This somewhat proves that they ARE dummy tips on the outside. The actual flow of exhaust goes through the inner tubes...and just for the effect of air physically going through the other tip...they run an auxiliary tube to the outer tips...

Do both have exhaust flowing through them? Sure.
Would I personally say they're functional? Nope.

Last edited by thedudeman321; Jul 28, 2010 at 03:57 PM.
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Old Jul 28, 2010 | 03:58 PM
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I have corsa's and there is only exhaust debris on one of the tips. It appears to me that only one works. Not that you couldn't drill out the other one. But I haven't done this. Pics to follow........
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Old Jul 28, 2010 | 04:09 PM
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Pics,,,,,,

[IMG][/IMG]

[IMG][/IMG]

[IMG][/IMG]
[IMG][/IMG]
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Old Jul 28, 2010 | 05:09 PM
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These video show that the Outer tips do work and are Not Plugged.

Inner tips = Primary Performance exhaust flow.
Outer tips = Auxillary exhaust flow.

I don't know how much simpler I can make it.

Last edited by GKK; Jul 29, 2010 at 09:16 PM. Reason: Exhaust flow too control Resonance (changed)
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Old Jul 28, 2010 | 05:15 PM
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Originally Posted by ElvisGraceBo
I have corsa's and there is only exhaust debris on one of the tips. It appears to me that only one works. Not that you couldn't drill out the other one. But I haven't done this. Pics to follow........
The inner tip gets black because it is the Primary Performance exhaust flow. the Outer tips only flow a minimal amount of exhaust.

Start your engine and plug the black sooty tips with something and your engine will still idle.

Prove it to yourself, I don't know what else to say.

Last edited by GKK; Jul 29, 2010 at 09:19 PM.
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Old Jul 28, 2010 | 05:36 PM
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not to get off the topic but are they a straight thru design(the primary)??
I have corsa on my vette.I plan on removing the cats,this will of course be for track use only.
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Old Jul 28, 2010 | 05:46 PM
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Originally Posted by thedudeman321
Do both have exhaust flowing through them? Sure.
Would I personally say they're functional? Nope.

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Old Jul 28, 2010 | 07:38 PM
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Originally Posted by tblt44
not to get off the topic but are they a straight thru design(the primary)??
Yes, the Primary tip is a straight through design.
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Old Jul 28, 2010 | 07:44 PM
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Originally Posted by thedudeman321
Do both have exhaust flowing through them? Sure.
That's all I was trying to prove.

If you want a muffler that flows an equal amount from both tips Corsa is not for you.

If you want a dual tip Muffler with a straight through design and one tip that only flows a minimal amount and doesn't have Resonance, then, Corsa is the one.

Last edited by GKK; Jul 29, 2010 at 09:21 PM.
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Old Jul 28, 2010 | 07:46 PM
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I'm still not gettin the point. The cut away pic clearly shows a solid plug where the red arrow is. If it's for resonance- ok, but really still not a dual flow through. Not that it makes any difference, there is 0.0 hp gains with any catback exhausts alone.
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Old Jul 28, 2010 | 08:18 PM
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Originally Posted by socalman
I'm still not gettin the point. The cut away pic clearly shows a solid plug where the red arrow is.
The exhaust flows "Around" the Baffle plate which is suspended in the muffler case.

Look closely and follow the white line and you can see a 1/4" space in front of the baffle plate where the exhaust flows around and into the outer tip.

Last edited by GKK; Jul 28, 2010 at 08:25 PM.
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Old Jul 28, 2010 | 08:29 PM
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Originally Posted by GKK
The exhaust flows "Around" the Baffle plate which is suspended in the muffler case.

Look closely and follow the white line and you can see a 1/4" space in front of the baffle plate where the exhaust flows around and into the outer tip.
ok, I get it. I didn't realize there was a controversy with Corsa.
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Old Jul 28, 2010 | 08:39 PM
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Originally Posted by GKK
Yes, the Primary tip is a straight through design.
If it did go to 2 pipes after the muffler you would gain nothing,you have a 2.5(just a guess pipe dia.)running from the manifoild to the rear of the car so if it went to two pipes what would you gain.You may gain if it was not a straight thru design.JMO
I love my Corsa's
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Old Jul 29, 2010 | 01:17 AM
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Originally Posted by tblt44
if it went to two pipes what would you gain.
Interior Resonance.
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Old Jul 29, 2010 | 05:26 AM
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Originally Posted by socalman
I'm still not gettin the point. The cut away pic clearly shows a solid plug where the red arrow is. If it's for resonance- ok, but really still not a dual flow through. Not that it makes any difference, there is 0.0 hp gains with any catback exhausts alone.
Made a big sotp on my 89
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Old Jul 29, 2010 | 09:35 AM
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If both pipes are flowing, how come there is no exhaust debris on both outlets?
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To Corsa Outer Tips Functioning Video Proof.

Old Jul 29, 2010 | 09:36 AM
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I wish we could get somone from Corsa to settle this thread.....
Helloooo.. Corsa??? Helloooooo........
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Old Jul 29, 2010 | 10:10 AM
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Originally Posted by ElvisGraceBo
If both pipes are flowing, how come there is no exhaust debris on both outlets?
Bingo! Kind of a pita to have to clean them to match. Hence why I went with B&B.
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Old Jul 29, 2010 | 10:25 AM
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Originally Posted by ElvisGraceBo
If both pipes are flowing, how come there is no exhaust debris on both outlets?
Because only a Very Small amount of exhaust is exiting the outer tip.

Look at how small the circled pipe that feeds the outer tip is. The outer tips are not going to get dirty with only a tiny amount of exhaust gas exiting.
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