So what we could have is you being over sensititive or was this something discussed at purchase. What mods on the bike is stock headers any O2 bungs or sensors. Is the factory heat shield fitted, did you inspect all the retainers and buckets for cracks or unusual wear, are thecams straight did you check there run out, are any of the cam caps damaged and did you inspect those journals. Any chance you could record the noise and post it up mate?
[SIGPIC][/SIGPIC]192MPH stock engined 2008