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Muffler delete

Kc4O

By Kc4O
in 2014 - 2019 Silverado & Sierra

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Kc4O Enthusiast

Kc4O

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5.3l with stock muffler, resonator, and valve cut off. I welded in a flowmaster 40 series. Gives the v8 muscle car sound. There was a little drone until the muffler was broke in... Now there is nothing. When your not on the throttle it's just a little rumble. When you hit it good it sounds like it should! I can post a video in am if you like...

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Please do lol I’m not looking to go real loud


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MN1(SW)
MN1(SW)

I chopped both the muffler and the valve off and I personally think it sounds great. I drove from San Diego to Mississippi and back and it didn't bother me.    As far as DoD (aka AFM?), they

Kc4O
Kc4O

So I did a muffler delete recently and just a straight pipe but kept the resonator on the rear. I’m getting a lot cab noise should I put a high flow muffler instead?     Sent from my iPhone using Tap

dmorrisL86
dmorrisL86

Put on a small magnaflow or borla XR1 muffler. Something that is straight through. 

Kc4O Enthusiast

Kc4O

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That was not a cold start... Had an early morning.


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On the highway do you get that low tone that echos in the cab?


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damnthetorpedoes Enthusiast

damnthetorpedoes

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On 11/20/2018 at 8:24 PM, GMC_SD_Ult_16 said:

I did the same with my set up 6.2 L with a 12909 Magnaflow 3.5". Remove OEM muffler, resonator and flapper valve... I have not looked back... At first I did the muffler delete with resonator in place and it was too loud for the neighborhood along with v4 mode drone. Now v4 is not a big deal as I notice it about like stock. Good luck with your choice.

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Do you have any sound clips? I have the 12909 with flapper removed and resonator still on. I am considering removing the resonator for a little extra sound. 

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GMC_SD_Ult_16 Enthusiast

GMC_SD_Ult_16

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Do you have any sound clips? I have the 12909 with flapper removed and resonator still on. I am considering removing the resonator for a little extra sound. 
I don't have any sound clips .. sorry... Out of town currently so no help anytime soon. If someone else does have any clips please share to help dtt out... Thanks.

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KARNUT Senior Enthusiast

KARNUT

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I had muffler delete on my 14 GMC as an experiment before going with a performance muffler. It wasn’t loud really after initial start up. Lite sound cruising, more on throttle. The resonator is really no different than a glass pack. Then you add the cats can’t expect too much noise. Evidently I put a performance muffler on, it went back to stock sounding. At 59 years old my loud exhaust was a thing of the past for a daily driver. As far as sound quality that’s in the ear of the beholder.


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