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What's a quiet muffler that still makes power?

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Old 01-04-2012, 04:31 PM
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Default What's a quiet muffler that still makes power?

I'm installing LT's/ORY in a few weeks and I'll have a e-cutout so while the cutout is closed, I'd like a quiet muffler that doesn't absolutely choke the power. Any suggestions? I'm thinking about a Hooker Aerochamber with a Corsa style side tip. Thanks!
Old 01-04-2012, 04:39 PM
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I have a 7" round 12" long Magnaflow bullet into a 22" Magnaflow big case muffler. Pretty quiet. Tried a 5" round before the 22" but still too loud. The 22" alone was really, really loud with the catless LT's, it would set car alarms off when I started it.
Old 01-04-2012, 04:44 PM
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im running a AC this weekend on my LT's, I will post vids in the Cal Speed thread I made today.
Old 01-04-2012, 04:49 PM
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I love my flo-pro, it is quiet behind my 6.0 with no drone, it seems to flow well over the stock muffler it has more power everywhere.

Last edited by greenz71; 01-04-2012 at 09:15 PM.
Old 01-04-2012, 06:50 PM
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mine is a 36" magnaflow muffler.....pacesetter LTs with OR-y
Old 01-04-2012, 06:54 PM
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Any youtube vids? Thanks guys!
Old 01-04-2012, 06:58 PM
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The other day my buddy test drove an 06 CCSB 5.3 with a cam and full exhaust. It haf a diesel cat back and sounded awesome. I just can't find many 3" diesel c/b's.
Old 01-04-2012, 07:19 PM
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Originally Posted by DTHPROOF
The other day my buddy test drove an 06 CCSB 5.3 with a cam and full exhaust. It haf a diesel cat back and sounded awesome. I just can't find many 3" diesel c/b's.
I have a stock Duramax exhaust I want to get mated to my exhaust. It's 3.5" and needs to be adapted down to my existing 3" stuff.

FWIW, I presently have longtubes, off road Y, 3" pipe to Hooker AeroChamber, then into Dynomax 1 into 2 SuperTurbo muffler with 2.5" tailpipes. Sounds good (and is very quiet at cruise rpm's) but I just can't leave well enough alone, LOL...

AeroChamber with open 1 into 2 adapter so I could keep my dual tailpipes was entirely too loud and raspy...sounded like burned out glasspacks, which IMHO, sounded like ****...
Old 01-04-2012, 07:27 PM
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holy ****...there is a vid on gmfs (spanky) with lt's and AC and it sounds killer
Old 01-04-2012, 08:05 PM
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Flo Pro. I have the 2503 on my 05 1500HD and I really like it. It's quiet, as in dead stock muffler quiet. I don't notice any additional sound over the stocker it replaced and it has probably 1000 or more miles on it now. The only reason I changed the stock one out was it had a baffle break inside it and make a constant rattling sound, lol. Can't comment on power but they apparently flow very well. I don't feel any difference on muffler swapped stock trucks.....


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