where do you get that dynomat at.never mind I seen where you got it at.how much did you buy.They are loud inside, I have an '07 650 and did the same thing. Funny thing is I was hunting this winter and my dad didn't hear me coming up behind him while I was driving on the levee. He said it was quiet.....only on the outside.
It will also take heat.I think I bought one box of these RBL Products 138 - Xtreme Dynamat Sheet | O'Reilly Auto Parts
And one of these to put over the other.
Dynamat 11905 Hoodliner 32" x 54" x 3/4" Thick Self-Adhesive Sound Deadener : Amazon.com : Automotive