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MagnaFlow mufflers on 2019 5.3

Raybaby
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DuRsT Enthusiast

DuRsT

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I will give some different advice.

 

I would leave at least one of the flappers.  They are there to mitigate undesirable sounds coming from DFM and those sounds become very noticeable with a louder exhaust.  I couldn't honestly tell much of a difference in volume between no flappers and adding one back, but could tell that some of the DFM silliness went away when it was added back. 

Raybaby Enthusiast

Raybaby

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There is only one flapper on the 5.3 I had it cut out and covered  the screen’s just right sound. Don’t know the part # on the muffler just know it was the 22”long one

  • 10 months later...
HistoryTeacher2020 Enthusiast

HistoryTeacher2020

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Posted
On 2/10/2020 at 3:37 PM, Raybaby said:

MagnaFlow muffler on a 2019 5.3 RST DO I HAVE FLAPPER CUT OUT OR LEAVE ALSO SHOULD I COVER THE SCREENS

I did the same though kept the screen in the rear (existing exhaust pipe in great shape). If you want, you can wrap the screens but I did not see the need. 

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