Hi everyone , i have engine noise problem on my 06 600rr . Noise comes beetween 4k rpm to 8k rpm . I already changed oil and filter , new cam chain and manual cct . The problem is still there and i would appreciate if anyone can help my to solve it , here is the video
To be honest, I cannot hear anything strange.
I can hear some rumbling of the intake noise, is that what you're referring to? Can you test this again with your motorcycle fully assembled? Around 5500 rpm is when the second set of injectors activate and there are some "resonator" ducts that should be in place to get rid of the standing waves in the intake. This probably occurs around 5500 rpm and upwards.
So if you remove this or have the bike disassembled, it could explain it - assuming we're talking about the same noise.