Is manifolds/cutout louder than headers/catback?

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Sep 15, 2004 | 12:53 PM

soslo

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From: Austin, TX

Is manifolds/cutout louder than headers/catback?

I have an electric cutout on an otherwise stock exhaust with heads/cam...its time to upgrade to headers. My question is will the car be louder or quieter with headers/duals/mufflers than with the manifolds/open cutout?

I've checked out ls1sounds.com (great site), but it is hard to get an apples-apples comparison with different videos.

Setup I'm thinking about -> QTP headers, x-pipe, dual 2.5" exhaust over axle, 7.5" mecham oval tips. Mufflers I am still debating on, and I know these will make a big difference. Edelbrock 304. Sweet Thunder pipes. Any other suggestions? I want a deep sound. No rasp. Doesn't have to be Nascar - I'm going for more old school. Think the sound Elanor has when idling.

Sep 15, 2004 | 01:28 PM

mnc2886

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From: Houston,TX

It will be louder with headers, duals and mufflers because you wont have cats. My friend had a cut-out on stock manifold/cats, and it wasn't all that loud.

Sep 15, 2004 | 02:15 PM

LS1LT1

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Quote:

Originally Posted by mnc2886

It will be louder with headers, duals and mufflers because you wont have cats. My friend had a cut-out on stock manifold/cats, and it wasn't all that loud.

Depending on which cat back (or on which mufflers you choose in a true dual set up) is chosen I agree...I have a pure stock exhaust (stock internal motor though) with a cut out and it's not all that loud relatively speaking.

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