I just purchased a new 2010 (leftover I guess you would call it since the 2011's are available) and installed the Cobra Swept Exhaust. Aside from the hose clamps being a slight pain, it was a very easy install. I LOVE the change in sound of the exhaust both at idle and while cruising AND also LOVE what it has done to the appearance of the bike. My only concern is the slight "popping" upon deceleration. I am not sure I would even call it a "backfire". Is there a solution to this? Maybe I haven't given it enough time for me to adjust to the "popping", and in fact, I am not sure if I like it or don't like it. It's just different than I am used to. With that said, I am new to the forum, so if this has been posted before, I apologize in advance.