I noticed the same (?) thing when I went to K&Ns. Everyone was talking about the chirping, which I do hear but too many rock concerts in my younger days means it is a very mild distraction. What I did hear, "woodpeckers," was possibly what you're describing. You might try taking a short ride without your helmet to see if it goes away or changes. I think my helmet (an Arai) was causing that sound (valves- see next post) to be amplified for some strange reason. I have a different helmet and now it's not so much. Here's the link..
I hesitate to start a new thread on this. I've searched the archives and have found a few bits of information, but I really could use some feedback. Background: I completed a valve adjustment- just one intake out of spec (too loose) that came in perfectly right in the middle after a shim...
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