Just installed a tach, and you're right,at about 3800-4000 rpm i get the vibe no matter what gear, not really bad but i know it is there, but i had a BMW 650 for a loaner one day and i will never complain about my bike vibrating again, i think this beemer was a little beat up though. I have purchased the FREAK and will install and re jet very soon, i will let you know what happens. Thanks for the reply
