I have no idea what happened....but after my last ride, about 70 miles freeway, it started sounding like it is sucking air through an echo-ey box. Kind of dirt-bike-esque. Nothing seems loose, I thought the exhaust headers might have come loose but they're fine. I'm pretty sure its from the air box. Any idea what could have happened...? Still runs pretty much exactly the same, no CEL or anything. Just a somewhat annoying sound now...ha.