Exhaust: Does larger (2.5 vs 4") equal louder?

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Dec 23, 2010 | 04:15 AM

#11

White Knight 04

Road Master

Joined: Sep 2007

Posts: 1,043

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From: N/W Pennsylvania

Easy answer smaller less sound larger more sound !!!!! Period !!!!!!

Dec 23, 2010 | 08:18 AM

#12

jacknthebox

Thread Starter

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Joined: Oct 2009

Posts: 744

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From: Pluto

Quote:

Originally Posted by RaceFace

I've got 4" Rineharts vs my V&H's (in the pic below).....the Riney's are way louder.....but it may just be how the baffles are packed. I'm wondering whether or not I will get hassled by Johnny Law in the future. I stay off the gas when I pass a police car around here.

Quote:

Originally Posted by j1mmy

if your talking about baffles its a crap shoot.. depends on the baffle design,differant on evry pipe.. a larger pipe is going to be louder because the sound echos more inside a big pipe..then if you have a muff,again depends on design..run open 4",evryone will know your coming.a stock muff is 4",but its 30"long all baffle,exhaust is acually blowing thru a 7/8". tube

Quote:

Originally Posted by sifularson

I believe the large muffler body of a 4" muffler gives a deeper sound. I had V&H ovals on my 07 and now have Monster Rounds on my 11. The rounds are much deeper but still fairly loud.

Take a listen for yourself . . . below.

Quote:

Originally Posted by emwolb

this is an easy one. imagine a saxaphone. an e-flat alto sax is much smaller than a baritone sax. the baritone is much deeper in tone than the alto sax, only because the baritone sax has a much larger body, longer and much bigger around. it's all about volume, the amount of cubic inches inside of the tube, the deeper the sound will be. likely the sound will resonate while it travels through the tube as well, affecting the sound.

Thanks all - it makes sense now.