Dynamat alone wont do anything for drone. I have SS Race and X-pipe, lined the entire trunk with Dynamat and the drone is still there. However, it help a little bit with the vibration. Dynamat basically a sound dampening.
Do a search, there were many discussions about it here.
The drone isn't too bad with the SS Race and most noticable at only certain RPM. I learn and dont stay in those RPM range.
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