How much louder will my truck be with no muffler?

I have a 2012 Silverado 5.3 L
I currently have a flowmaster outlaw muffler, which is supposedly one of the louder flowmaster mufflers. I’m taking my muffler off for a few days, just doing a whole muffler delete.
Will it be noticeably louder with no muffler at all?
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