I just got my 09 Street Glide back from having the heavy breather, V&H black Dreser Duals, and Black Monster Ovals installed. I would have done it myself, but frankly, I'm too old and beat up to be crawling around mounting pipes. They also dynotuned it with a SEPT installed. I gained 5.5lbs of torque and 9 HP. I wasnt't really trying to get more horses but it's a nice result. The Monster Ovals sound really great, not too loud and nice low tone. They remind me of my old '69 SS/RS Camaro. I couldn't be more pleased. Pics to follow.