I have the same issue and Ford installed camber bolts on mine yesterday and I am getting new tires under warranty also. They set up the camber 0 degrees. How much camber are you running? Do you still have issues with your front tires?
Did you try to change the ACM, I found out in another forums that's the issue. Went to the dealer and they couldn't hear anything. Of course went I got back home the static noise came back.
Did you find the fix? Cause I just got my Ford Mustang Ecoboost and I have and appointment tomorrow at the dealer. To be honest after reading the posts of people having the same issue not sure to take it or not. My issue is exactly how you described it. Thanks