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Muffler Help

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204Denali Enthusiast

204Denali

Posted
Posted
23 hours ago, Therickyp said:

These new gen trucks don’t get too loud. My buddy has a 2020 6.2 straight piped and it’s not that loud. The flow master 40 and 44s are too quiet on these truck. If your going with a flow master then get the 10 series. 

You have obviously not heard ATAK's on the 6.2 then, nobody would consider them not loud

204Denali Enthusiast

204Denali

Posted
Posted
On 10/28/2020 at 11:10 PM, Terry Wood said:

I'm in the same dilemma.  I don't mind it "Corsa Sport" loud when I'm on it or even on startup and idle but when I'm just cruising on the highway with the kids, I don't want to really hear it at all.  I've posted on the Facebook groups to try and find someone with a muffler delete local to me (Lawton OK).  I also plan to visit the dealer to look and hear the Borla Touring cat-back.  If the delete is too loud, i'll spend $1200 on the full cat-back but saving $1000 bucks is definitely tempting and worth the investigation!!

Muffler delete would not be for you, I would not suggest it.

 

Borla Touring quite a few owners enjoy, same muffler as the GM performance exhaust and in my opinion the quietest borla muffler available.  If your just looking for a little sound on startup and when you give it some gas, Touring is the direction I'd suggest

  • Like 1
Terry Wood Enthusiast

Terry Wood

Posted
Posted
On 12/4/2020 at 6:51 PM, 204Denali said:

Muffler delete would not be for you, I would not suggest it.

 

Borla Touring quite a few owners enjoy, same muffler as the GM performance exhaust and in my opinion the quietest borla muffler available.  If your just looking for a little sound on startup and when you give it some gas, Touring is the direction I'd suggest

I did the delete.  I was only slightly too loud but went with 3.5" pipe to replace the gap left by cutting out the muffler and got bad drone at 1500 rpm.  Installed a Borla XR1 and got the proper volume but still had the drone.  Went back stock without the flapper until I can justify $1200 for sound.

204Denali Enthusiast

204Denali

Posted
Posted
7 minutes ago, Terry Wood said:

I did the delete.  I was only slightly too loud but went with 3.5" pipe to replace the gap left by cutting out the muffler and got bad drone at 1500 rpm.  Installed a Borla XR1 and got the proper volume but still had the drone.  Went back stock without the flapper until I can justify $1200 for sound.

Contrary to what people always say, Borla has drone when you all straight pipe. It can be minimal but it is still there. I’ve heard keeping a single flapper or two removed the drone completely but you will sacrifice some sound volume. 
I have the ATAK setup, I love It, no flappers and barely any drone but it is there at times. It is loud though. 
I have heard good things about the type S muffler, little quieter but still gives off the sound that’s missing with the touring muffler. 
IMO the gm perf exhaust isn’t worth it because of the touring muffler.  Isn’t loud enough for me nor do I think it’s worthy of the price point, which is why I went custom setup instead. 

Rob Mugs Enthusiast

Rob Mugs

Posted
Posted (edited)
22 hours ago, Terry Wood said:

I did the delete.  I was only slightly too loud but went with 3.5" pipe to replace the gap left by cutting out the muffler and got bad drone at 1500 rpm.  Installed a Borla XR1 and got the proper volume but still had the drone.  Went back stock without the flapper until I can justify $1200 for sound.

Could you take a clip of this inside/outside?

 

A lot of people are pulling the muffler and keeping the flapper which makes little sense to me since it is a pretty large restriction.  Even when fully-open, it appears to block off +/- 30% of the space.  IMHO, if I'm going to get a little louder, I should also be freeing up restrictions

download.jpg.18dbd1122e0faf4024822f87f1bc531a.jpg

Edited by Rob Mugs
  • 2 weeks later...
Terry Wood Enthusiast

Terry Wood

Posted
Posted
On 12/7/2020 at 8:46 PM, Rob Mugs said:

Could you take a clip of this inside/outside?

 

A lot of people are pulling the muffler and keeping the flapper which makes little sense to me since it is a pretty large restriction.  Even when fully-open, it appears to block off +/- 30% of the space.  IMHO, if I'm going to get a little louder, I should also be freeing up restrictions

download.jpg.18dbd1122e0faf4024822f87f1bc531a.jpg

I already went back to stock and deleted the flapper.

Terry Wood Enthusiast

Terry Wood

Posted
Posted
On 12/6/2020 at 10:30 PM, 204Denali said:

Contrary to what people always say, Borla has drone when you all straight pipe. It can be minimal but it is still there. I’ve heard keeping a single flapper or two removed the drone completely but you will sacrifice some sound volume. 
I have the ATAK setup, I love It, no flappers and barely any drone but it is there at times. It is loud though. 
I have heard good things about the type S muffler, little quieter but still gives off the sound that’s missing with the touring muffler. 
IMO the gm perf exhaust isn’t worth it because of the touring muffler.  Isn’t loud enough for me nor do I think it’s worthy of the price point, which is why I went custom setup instead. 

I think the problem was that the XR1 was a straight through muffler..... I feel if it had baffles inside to change the air and sound wave flow it would have been better.

Rob Mugs Enthusiast

Rob Mugs

Posted
Posted
1 hour ago, Terry Wood said:

I already went back to stock and deleted the flapper.

That is what I am interested in hearing.  Stock muffler without flapper.  I've got a saw and welder :)

  • Like 1
204Denali Enthusiast

204Denali

Posted
Posted
On 12/17/2020 at 8:59 PM, Rob Mugs said:

That is what I am interested in hearing.  Stock muffler without flapper.  I've got a saw and welder :)

Might as well go muffler delete at that point. 

204Denali Enthusiast

204Denali

Posted
Posted
On 12/17/2020 at 7:43 PM, Terry Wood said:

I think the problem was that the XR1 was a straight through muffler..... I feel if it had baffles inside to change the air and sound wave flow it would have been better.

It’s all in the setup. I’ve had straight through designs on all my cars, no drone issues. Truck is different than car obviously, and I’m not going to put the same $$ into my exhaust system as my cars. Your not wrong though, chambers would help but so would the flappers. Anything that would impede exhaust flow will cut down on drone, but will also hamper tone and to a degree performance. Just comes down to what you want from your system. 

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