I have the same howling noise... I had it in my Santa Fe as well. Friggin' annoying. I also have in channel visors and it didn't fix it. In another thread it was mentioned that it is caused by the mirrors. A guy had mocked up an air dam on the front of the mirror arm... I don't remember what his result was... If I was a fabber or had a 3d printer, I'd start my own business making them. LOL
'Twixt Light and Darkness lies...
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