Originally Posted by birdmanx1

WoZZer NAILED IT! I had dynamat (9 pack sheets) installed in my front doors and trunk. I did notice improvement over the stock (Don't ask me to quantify as it is very subjective but it was better than stock) BUT as WoZZer noted, the kind of roads you drive on DO make a difference. You'll still hear road noise if you are driving on non-smooth roads just not as more noticeable stock. On smoother roads, the noise is almost non-existent.

I had my audio upgrade done as well and will probably stop worrying about the remaining road noise at this level to avoid adding additional weight to the car. Overall, I'm satisfied with the Dynamat experience and would recommend as first step to reducing car road noise.