I installed the Borla in January. I like the sound. At around 2200 rpm it can be a bit intrusive inside the car, but a quick downshift will take out the "buzz" and get you on your way a bit quicker, too. Have gone about 4500 miles with the Borla and I think the tone has mellowed a bit. Still sounds great, just a bit more refined. The angry bumble bee noise was never a problem at install. Forget about any added horsepower benefits, they would be minor anyways. Buy it for the tone or the look and enjoy it.