Just pulled the trigger on an Injen catback exhaust. Just had it installed about four hours ago, and the drone is driving me nuts. I purchased this exhaust due to the favorable reviews and also the video clips I saw online. All of the videos and reviews that I've seen stated that the exhaust had a pretty mellow tone and did not drone. Well mine drones something horrible at around 3000 RPMs. This is both on acceleration, and deceleration. It has cobb exhaust hangers. I read A review on Mod bargains and the guy said it was a bit loud up until 700 miles have been put on it and then it mellowed out. Can anybody else chime in on their experience with this exhaust. I'm thinking of selling it and going back to stock.