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yep - opened the flap.
I put those on three years ago and never adjusted them... always closed. Today I open them and alot of engine noise goes away. When they are closed must be the way the air circulates and brings out certain noises.
They are like an echo board. Any noise the engine makes will bounce off of that and head straight for your ears. Good point, I usually remove mine completely in the summer months.
My Road King sounds like a hundred death rattles with the windshield installed. Take it off, and the bike is virtually silent. The amount of reflected noise is remarkable. As is the quality of what is reflected. Every tick, whirr, scrape, etc. All bounced right back into my face.
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