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

What are the advantages?

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Old Dec 30, 2002 | 02:48 PM
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Default What are the advantages?

I am considering the addition of a Corsa exhaust. Why is this better than just replacing the stock mufflers with a set high performance mufflers? It seems that the stock exhaust tubing is of sufficient size to allow good air flow?
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Old Dec 30, 2002 | 03:02 PM
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Default Re: What are the advantages? (champ)

One of the reasons why the LT1 and C5 guys like Corsas is because they have very little resonance and are quiet at cruising speeds. So you dont get a headache on extended drives. But they will scream when you step on it.

The stock exhaust on the LTs is better than early c4s, you would actually see more gain from headers in the HP department than a catback.

So the only reason for you to really need to go to one of these expensive exhaust systems is sound preference. Performance-wise there really isnt much difference between any of them, unless the tubing is substantially bigger.
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Old Dec 30, 2002 | 03:02 PM
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Default Re: What are the advantages? (champ)

Look at the stock exhaust pipe size and the quality of the bends; if crinkled at the bends effective size (and air flow) is reduced.

A quality cat-back used mandrel bent pipes of larger (usually) diameter than stock.
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Old Jan 1, 2003 | 01:51 AM
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Default Re: What are the advantages? (champ)

FlowMaster's the best and safest choice... and Hi flow cat...Just my humble thoughts....
:steering:


[Modified by oldace84, 1:52 AM 1/1/2003]
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Old Jan 2, 2003 | 12:37 AM
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Default Re: What are the advantages? (oldace84)

B&B TriFlow's with: No cats, and TPIS Long Tube Headers.
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Old Jan 2, 2003 | 12:47 AM
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Corsa = $$$$$$$$$$$$$$$ for pretty tips. Sorry, can't stand them. :D :blueangel:
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Old Jan 2, 2003 | 07:56 AM
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Default Re: (scorp508)

Corsa = $$$$$$$$$$$$$$$ for pretty tips. Sorry, can't stand them. :D :blueangel:
You could say that about all of the systems.

I never dynoed my car with the stock exhaust, but with the Corsa I got 285 hp at the wheels.
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Old Jan 2, 2003 | 09:21 AM
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Default Re: What are the advantages? (champ)

The benefits of the Corsa have been mentioned. Mainly it's sound and visual appeal. Personally I like the look of the stock LT1 tips so I had a set of flowmasters installed and kept the stock tips. Granted they have a bad resonance at about 1800 - 2000 RPM's, but the simple solution is to not drive at that RPM. With a 6-spd this is very easy, gets a little harder with the auto.

For the most aggressive sound you can't beat them. Ditch the cats, throw in some headers and remove the resonator and they sound even better. They sound great without the raspy high pitched note of straight pipes. Just my $.02 the resonance bothers some people. :cheers:
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