??1981 L81 exhaust??

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Mar 4, 2005 | 12:00 PM

toyvette81

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??1981 L81 Dual exhaust??

i currently have dynomax super turbo mufflers on it and a high flow cat, i have read that most people take the cat off of this car.... will it really make that much difference? and has anyone cut a pipe and installed true duals on their vette? if so help me out

Last edited by toyvette81; Mar 4, 2005 at 12:08 PM.

Mar 4, 2005 | 12:02 PM

MsVetteMan

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From: Madison Ms

I just dropped my Cat the other day! Straight piped back to the existing 2 year old mufflers, and it made quite a difference. Smoothed out the engine, and added a little kick! It also opens you up for future mod's.....the more you can exhaust, the more you can put in! Translates to increased HP!!

Mar 4, 2005 | 12:04 PM

toyvette81

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cat

did u have an old cat( my old one was tremendiousley clogged up) or did u drop a new or high flow cat?

Mar 4, 2005 | 12:09 PM

MsVetteMan

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From: Madison Ms

I dropped the old cat........

Mar 4, 2005 | 12:46 PM

toyvette81

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is it duals all the way out or does it go into one then back out to 2 mufflers like stock set up? thanks

Mar 4, 2005 | 12:57 PM

MsVetteMan

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From: Madison Ms

True duals.......no y's or single pipes......makes a big difference....

Mar 4, 2005 | 03:18 PM

Pauld

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From: Rochester Kent

Quote:

Originally Posted by MsVetteMan

True duals.......no y's or single pipes......makes a big difference....

That's what I have done, true duals are the way to go, they really make a major difference.

Mar 4, 2005 | 05:32 PM

Ben Taylor

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From: Camino CA

A new high flow cat will give you about the same performance as no cat. If you have any smog inspections where you live there is no way you will pass without a cat.

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Mar 4, 2005 | 05:42 PM

Ganey

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From: CORVETTE 77 385 C.I. TEXAS

See what many refer to as my Exhaust topic.
http://www.corvettefaq.com/c3/ganeyexhaust.htm

Mar 4, 2005 | 06:48 PM

#10

bob2169

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From: Houston TX

dumb question here, but how would I know if my cat is bad or clog?

Mar 4, 2005 | 09:45 PM

#11

Master Ho

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From: KS

Quote:

Originally Posted by bob2169

dumb question here, but how would I know if my cat is bad or clog?

Obviously, you could remove and visually inspect it, or check the exhaust flow at the tailpipes with your hand. A bad cat will reduce airflow significantly.

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