FYI all-Latest issue of HOG magazine has an article on engine assembly. The pics make it look like these engines would all go together with a precision that would have them all producing the same amount of noise or no noise. However, we all know that's not the case. I have a friend who bought a 2015 Ultra recently and his engine noise is really bad-that being said, these air cooled dinosaurs seem to run a long time! Thankfully, mine is not noisy !