i've had my "hush" on for about a month.....love it....its def. louder than i expected. i work right across the street from a police station w/no problems. drone? hhhmmmm...jus a lil....but that's w/the radio off. took a road trip to vegas w/the wifey and she didn't even complain. still runnin w/stock dp and 3rd cat. i'll post a review once i install the cobb dp w/cat.