Muffler Options

[5.3L11z71]

Installed magnaflow on mine. Love the sound, not to loud when driving normal, gets loud at WOT!!

[DjGreggieP]

Installed magnaflow on mine. Love the sound, not to loud when driving normal, gets loud at WOT!!

Did you leave the cats or pull them as well?

[f4tal]

Good luck with that one...I have it on my 5.3 and can hardly hear myself think in the cab.

Same as him ^^^

I just sold that muffler/bullet more like it. It was loud dumped but sounded great. Then I ran a 3in pipe from the muffler back and it killed the sound and it turned into a raspy old busted up glasspack sound at certain rpm's.

So I bought the 30x8x5 single 3in/out magnaflow
I'll never buy another muffler except the big case magnaflows.

I had the 30x11x5 single 3in/out magnaflow on my old H/C 5.3 with LT's and it sounded awesome. Quiet at cruise and opens up at WOT.

[RPM Graphics]

so everyone is running single mufflers? right now i have dual Flowmasters, 40 series i think, they were on the truck when i first bought it.
it's only 2.5" exhaust but for now i'm just going to tie my 3" headers back into it. eventually i plan on running 3" all the way & i'm not sure if i should stick with the 2 mufflers or go to 1 muffler.

[DjGreggieP]

so everyone is running single mufflers? right now i have dual Flowmasters, 40 series i think, they were on the truck when i first bought it.
it's only 2.5" exhaust but for now i'm just going to tie my 3" headers back into it. eventually i plan on running 3" all the way & i'm not sure if i should stick with the 2 mufflers or go to 1 muffler.

I'm just running a single muffler for now, eventually I want to swap out to dual BORLA XR-1's when I pick up my long tube headers, just not in the cards financially right now lol.

Question still to be answered, do I pull the cats now?

[f4tal]

so everyone is running single mufflers? right now i have dual Flowmasters, 40 series i think, they were on the truck when i first bought it.
it's only 2.5" exhaust but for now i'm just going to tie my 3" headers back into it. eventually i plan on running 3" all the way & i'm not sure if i should stick with the 2 mufflers or go to 1 muffler.

I'd ditch the 40 series. You can still run 2 mufflers if ya want but run a straight through muffler ie...magnaflow, borla, corsa. Depending on how loud you want it will determine the case size.

I'm just running a single muffler for now, eventually I want to swap out to dual BORLA XR-1's when I pick up my long tube headers, just not in the cards financially right now lol.

Question still to be answered, do I pull the cats now?

Leave the cats on man, it'll sound better with stock manifolds. Once you get the LT's then ditch the cats. I can't imagine how ungodly loud that muffler will be without the cats.

[Frenchy]

I run a big ass Magnaflow, idle, cruise, it's like stock. Stomp on the pedal and it sounds like the world is gonna end.

[RPM Graphics]

i was thinking of going with 2 Magnaflow's but don't know what size.
i guess when the time comes i'll see what the muffler shop recommends & what kind of deal i can work, LOL!!!

[bodis22]

so everyone is running single mufflers? right now i have dual Flowmasters, 40 series i think, they were on the truck when i first bought it.
it's only 2.5" exhaust but for now i'm just going to tie my 3" headers back into it. eventually i plan on running 3" all the way & i'm not sure if i should stick with the 2 mufflers or go to 1 muffler.

Single exhaust is just as efficient if it is big enough. I am running a 4" In/Out but of course my pipe is all 3 5/8" or whatever comes on the new 6.2s. My magna flow muffler is the same they run on diesels I believe, tubular, not oval round.

[DjGreggieP]

Leave the cats on man, it'll sound better with stock manifolds. Once you get the LT's then ditch the cats. I can't imagine how ungodly loud that muffler will be without the cats.

I really need to get some video of how my exhaust sounds currently lol,