I have taken my '07 FXDC to the dealer a couple of times for this BBs in a Can noise and they said there is nothing wrong, it is a normal noise. Even started up a couple other Dynas and the noise was there, not quite as loud as mine, but there. Question is, what is making the noise and what can be done about it. It doesn't seem to be RPM related, but I hear it mainly after I rev and let off the throttle. It seems to be getting worse

 

most folk say that the Hog is just noisy, valve train wise. I have also heard the outer lifters work at an obtuse angle and sometime have trouble filling which leads to tappety head noise especially front cylinder. there have been a few threads on it which have eased my worries, however i am still going to insist that the whole area is checked out at the 5k service just to make sure i dont have any wear going on...