Idont know what exactly the noise is but i just gotten my carbs cleaned about about three weeks ago and everything was fine till about three days ago when i starting hearing this flapping noise coming directly from under the tank when im accelerating normally or even hard. There is no noise when the clutch is pulled in and im riding in neutral. I dont know what it might be but the bike still pulls very strong so its not affecting performance. Any ideas??????

 

Probably the infamous CCTL, which there are alot of different opinions on. Best suggestion I can offer, talk to your local Honda dealer, see what they think.