Anyone try stuffing their ports?

My former speakers: B&W 805s came with a foam plug to modify the output of the port. I tended to use them without the foam plug. And without the grills too.

my room has an open wall which leads to the kitchen and the opposite side is closed in. after running some test tones with a decibel meter i noticed i had a 13db boost between 40-50hz. i stuffed the port on the speaker near the closed in area and reduced it by 9db. i am now within 5db from 38hz to 80hz.

I had B&W P6s with foam port plug that I used to good effect.

I loosely obstruct the ports of my Dynaudio Contour 1.3mkiis and OHM 100S3 Super Walsh 2s in my wife's sunroom, which is 12X12 with cathedral ceilings in that the speakers are relatively close to the rear walls and the bass can be too much otherwise in there.

My smaller less bass heavy Triangle Titus XS monitors run with ports unobstructed when in that room.

I do not obstruct the ports with the same speakers in my 12X12 office with conventional ceilings directly below the sunroom.

My point being that obstructing ports to various degrees can be an effective tool to help tune a speaker to room better if needed.