Muffler Help

[Weiser699]

I recently purchased a 2020 SLT 1500 with the 6.2. I need advice on a muffler that will give me a deep throaty tone and provide a 30-50% increase in sound but I do not want the "helicopter" sound when DFM kicks in and also I am ok with low drone in the cab. Would a Flowmaster Super 40 Delta Flow fit this bill? I am only looking at a simple muffler replacement. Not looking at replacing the entire exhaust with a catback or other upgrades. Resonators would stay in place. 

[BluegrassMotorsport]

I did the muffler delete on my 6.2 and I'm thrilled with it. No highway drone until over 80mph and a solid aggressive sound. There is a slight helicopter noise with DFM but I've only noticed it once or twice. Only cost me $75. 

[Dman10]

I took off the stock muffler and rear flapper and went with magnaflow 11229. Very nice. Some say they were able to remove both flappers and its good, i call bs on that. The dfm makes a choppy sound and drones before more cylinders kick in and the tone changing while its switching make the drivetrain feel busy. With the front flapper in it is more stock like with some kick when you want it to be.

Edited October 11, 2020 by Dman10
Grammar

[Weiser699]

On 10/10/2020 at 10:00 PM, Dman10 said:

I took off the stock muffler and rear flapper and went with magnaflow 11229. Very nice. Some say they were able to remove both flappers and its good, i call bs on that. The dfm makes a choppy sound and drones before more cylinders kick in and the tone changing while its switching make the drivetrain feel busy. With the front flapper in it is more stock like with some kick when you want it to be.

Thanks, going in Friday to do a muffler delete and leaving in both flappers and resonators. I have heard of others using muffler tape on the resonator screens. How does that change the sound? Does it make it deeper, louder?

[Dman10]

Read it makes it louder and a little raspy. Couple posts here say to leave the last one by the hanger open. Muffler delete would be higher pitched than what I have. I like a deep tone.

[reardiff]

maybe a little pricy but ever thought of the GM Performance exhaust?  I just got mine on my 2017 6.2 and sounds really good, nice deep tone but not overly loud. It's Borla touring but made for GM and sold as GM accessory. Sounds a lot like what you are describing as wanting.  No helicopter since it has the flapper built in (at least on my 2017, not sure about the T1's)

[204Denali]

I would remove both flappers, Borla Type S or Magnaflow 12909 are both nice options, and both sound good and tolerable on highway IMO

[BluegrassMotorsport]

On 10/12/2020 at 6:00 PM, Weiser699 said:

Thanks, going in Friday to do a muffler delete and leaving in both flappers and resonators. I have heard of others using muffler tape on the resonator screens. How does that change the sound? Does it make it deeper, louder?

This is exactly what I did - left both flappers in and the resonator mesh uncovered. The sound is perfect to me. No drone on the highway but really nice on startup and under throttle. It finally sounds like it has all this power. 

[Weiser699]

17 minutes ago, BluegrassMotorsport said:

This is exactly what I did - left both flappers in and the resonator mesh uncovered. The sound is perfect to me. No drone on the highway but really nice on startup and under throttle. It finally sounds like it has all this power. 

My only fear is the sound level. I don’t want it really loud, just loud enough to notice a good exhaust. I’m afraid it’s going to be too loud and I’ll end up putting my muffler back on. I don’t know anyone in person to find out how loud it really is. Videos help but...

[BluegrassMotorsport]

5 minutes ago, Weiser699 said:

My only fear is the sound level. I don’t want it really loud, just loud enough to notice a good exhaust. I’m afraid it’s going to be too loud and I’ll end up putting my muffler back on. I don’t know anyone in person to find out how loud it really is. Videos help but...

I've got some start up videos I can send you but you're right, you can't tell much until you hear it yourself. I'll say this - I honestly don't think it's too loud or daily driving. I seriously can't even tell I did it on the highway. But I also have a cammed Corvette which is much louder so anything else is quiet to me haha. The good thing about a muffler delete is the cost is very minimal so if you don't like it, you can buy a Borla or Magnaflow muffler to put back in. You'll still make a better sound and save $1000 on a catback system. It's the best $75 I ever spent on a vehicle. 

Edited October 13, 2020 by BluegrassMotorsport

[Terry Wood]

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!!

[Dallas Kiezik]

If you like corsa sport, leave front flapper and do muffler delete. little quieter front flapper and magnaflow, quieter yet keep both flappers and delete muffler. 

[204Denali]

Borla Atak, delete both flappers = 

[Tjeli]

If you are at all "concerned" that it "might" be too loud then a muffler delete is not for you.  It is loud.  Not open headers loud, but its louder than most of the aftermarket systems out there.  I have had a lot of loud modified vehicles in my days.  On this truck, at my age, I find the Borla Touring to be perfect.  I would not want anything louder.  You know what they say about opinions though.....

 

-Eli

[Therickyp]

On 10/13/2020 at 6:57 PM, Weiser699 said:

My only fear is the sound level. I don’t want it really loud, just loud enough to notice a good exhaust. I’m afraid it’s going to be too loud and I’ll end up putting my muffler back on. I don’t know anyone in person to find out how loud it really is. Videos help but...

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.