I did this with my old AI hose and it had a pulsating whistle sound as it ran. Real annoying. Took the hose off and blew through it and out came the same sound. So I used another black hose and now it has a pulsating sucking sound to it [shwt, shwt, shwt]. While the bike is running I can pinch the hose between my fingers and the noise goes away. What's with that. Is this normal?
BikerT
