Normal intake clatter?

According to Sonny, the R3 intake noise is beautiful music. Mine makes a 'chirping' sound with open secondaries and K&N's.
Ah yes, but ...................................... @sonny god bless him, is occasionally wrong.
The crickets will chirp - if you get the fuelling;ignition balance wrong. Oh no - wait. Yes! - What! --- what!
 

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..
 
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Thanks for the link, my mind is at ease now.