Best muffler for 02 Denali

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Rocket Man

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I've seen a lot of discussion regarding mufflers for everything except the Denali. From what I've read these don't really benefit from a complete catback and don't suffer the y-pipe problems. (Correct me if I'm wrong). With that said, I'd like to replace my muffler only with something that sounds good at idle and wot with hopefully no drone. Not real loud but a nice rumble. I just had my cats replaced with Walkers and installed a Spectre CAI and plan on a tune from Blackbear.
 
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Rocket Man

Rocket Man

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I'm open. Just trying to keep costs reasonable so I can afford the tune!
 

ezdaar

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Whats budget?
What do you consider loud?
Care for stainless, norm steel?
Looking for best flow?
Chambered or straight through?
 
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Rocket Man

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As far as budget, hopefully a few hundred; as for loudness ,I had a 3" stainless dual exhaust on a 5.9 R/T Dodge that was fine so as long as its not obnoxious; stainless preferred; good flow of course but I'm no expert so that answers the last question too.
 

ezdaar

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Take a peek at these.
While not stainless, neither is the rest of your exhaust. YET :)
But, this will save you some cash for future upgrade, when and if you get bit by the power bug, last links.

Theses two should be able to be bought and installed for well under 200$.
Flow master merge, Make sure pipe diameter is correct.

****** max flow, muffler. its a straight through design, has a quit rumble idle, good ruble at cruise and roars at WOT.
But considering you have cats, even high flows. it should tame this muffler nicely.
These two should also come really close to matching your OEM muffler length, allowing use of your "over axle" pipe.
With little to no pipe extensions. aka less welding and cheaper install price.


Now onto the meat and potatoes.

Headers, get these without the Y pipe as its not needed with the exhaust linked below.

Header back exhaust, currently in prototype stage. Page 4 shows installed pics.


Both of those setups are priced very well.
You will however want to coat and wrap the headers as they transfer Alot of valve noise. this really annoys me. but alot of people I know like it. I'm just very picky when it comes to any noises/rattles my vehicles make.

When that header back exhaust ships, I will be selling my current 1 3/4" headers in favor of the new 1 7/8" with collector spikes.
I will coat and wrap the entire system from flange to tips, in effort to keep the exhaust gasses as hot as possible, improving scavenging and reducing that pingy sound thin stainless makes.


GL, on your choice.


A Decibel sheet for easy comparison between mufflers for ya.

http://www.qsl.net/st0f/****-db.jpg
 
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YukonXL04

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When that header back exhaust ships, I will be selling my current 1 3/4" headers in favor of the new 1 7/8" with collector spikes.
I will coat and wrap the entire system from flange to tips, in effort to keep the exhaust gasses as hot as possible, improving scavenging and reducing that pingy sound thin stainless makes.

You gonna sell your Y pipe with the headers? Shoot me a text when your getting ready to sell.
 
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Rocket Man

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You gonna sell your Y pipe with the headers? Shoot me a text when your getting ready to sell.

Man I was just shopping for a muffler but ezdarr wants to sell me a complete system including headers! Anyway I took some of his advice and went with a Flowmaster Scavenger merge pipe and a Flowmaster 50 series muffler. I don't want to deal with drone and I hope I like the sound. I'll know in a few -it's being installed.
 

ezdaar

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Yea, shawn, when Speed Eng releases that header back kit, Im going to replace my entire system.




O shit! lol! don't know about that flow master muffler... Good luck bud.

Was just showing you the exhaust system. for a "later date" :)
 
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Rocket Man

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What's wrong with a Flowmaster 50 series? Anyway it sounds good. Not too obnoxious but it sounds great when I throttle it. I read good things about it, I know you really like the ****** but oh well. It's done. Like I said, I didn't want drone, and I have none so far. Thanks for the info on the merge, the shop agreed. I probably wouldn't have done that without your help. Thanks, ezdaar.
 

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