Rather than burying this in my build thread, I thought I'd document things here. I've had many complaints that my bluetooth mic sounds pretty terrible, especially at highway speeds. Since my car is in the body shop for some PDR, I figured I'd take this time to see if I can improve things. The PDR guys had to drop the headliner for the repairs, so I asked them if I could come in and stick some Dynamat on the underside of the roof before they put things back together. I got the call today that they are ready, so tomorrow morning I will go in and do my thing. Unfortunately, funds are too tight to do the entire roof, but I was able to get a good price on 2ft^2 at Car Toys. I will chronicle my endeavor tomorrow, along with pictures, and let you all know how it went. I will also follow up after a few days of phone calls and let you know if it was a waste of $20, or a success. Wish me luck!