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!

 

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.

 

im running a AC this weekend on my LT's, I will post vids in the Cal Speed thread I made today.

 

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.

 

mine is a 36" magnaflow muffler.....pacesetter LTs with OR-y

 

Any youtube vids? Thanks guys!

 

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 ****...

 

holy ****...there is a vid on gmfs (spanky) with lt's and AC and it sounds killer

 

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.....