What is the quietest aftermarket cat back system?

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06-12-2004, 08:10 AM

#11

sroach20

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I have the flowmaster system on a 99 silverado with a 5.3. It comes with a big block series muffler and a resonator. Even with shorty headers you cannot hear it inside the cab unless you open up on it.

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06-12-2004, 09:06 AM

#12

quicksilverado

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[QUOTE=Naked AV]I had a Gibson single-in, single-out, side-swept and like the other poster, it blew. Resonance from 1600-2200 RPM's. Yuck.

Thats odd. I've got the exact same set up and I have no resonance or drone at all.

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06-12-2004, 09:22 AM

#13

gcooper

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Quote:

Originally Posted by Naked AV

I had a Gibson single-in, single-out, side-swept and like the other poster, it blew. Resonance from 1600-2200 RPM's. Yuck.

Got a Flowmaster 70 series big-block muffler on the advice of 'muffman' at the Chevy AV site with custom dual out pipes in the back. You should check him out at the site: (Muffman @ CAFCNA).

No resonance at all. Throaty sound when accelerating, little to no noise at cruising speed. Closest to stock from what I've heard. But you still know I have a cat-back.

Good luck. Let us know how it goes.

Ya i dont have any resonance either with the same Gibson set-up.

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06-12-2004, 09:53 AM

#14

2nd Sierra

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my gibson catback resonated as well although it was a relatively quiet system.

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06-12-2004, 10:15 AM

#15

WhiteDiamond

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Quote:

Originally Posted by CamaroSS1618

What is the quietest aftermarket cat back system that will make more power than stock? For a 2003 Avalanche 5.3L

Although I have no experience with it, I have heard the touring system from Corsa isn't much louder than stock. I have been looking for a truck with it on to compare and haven't found one. Not sure if the system is popular or not.

Todd