I have an 09 UG it has just under 3K on the clock and is stock. There is a chirrping sound when I accelerate and decelerate, I have been told by the dealer that it is the exhaust butterfly valve squeeking and should not be a problem, they are going to speak to HD about it as they have never encountered it before. :eam Has anybody out there come across this and if so found a fix. This is my first HD after many years of BMW ownership, and am pleasantly suprised. cant wait for some decent weather it has rained and snowed ever since I bought it but that has not deterred me from riding it yet.