Run well or run quite?

Anyone hear any theories about why older (up '03) Yamahas don't run well when quiet? I had trouble when I put in a quite core insert. I tried every jet combination known to man and it cleared right up when I took the insert out. I have read about this phenomena in a few magazines, but they never explain why.

im not sure why, but thanks for trying to keep your bike quite! that = more areas open.

race bikes were made for track in mind. not quite puppys. mess /w/ the jetting more, go down 3-5 #'s on every jet. (needle, 1 clip)

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now