Installed the Puig 6319W spoiler on my “new” BMW and now there is no more high-pitched wind turbulence. Now it just sounds like normal wind and is a little quieter, too. And the helmet lift and visor vented - slamming shut issues are gone and no more wind blasting my neck or the bottom of my helmet. And the wind on my chest and shoulders feels like my old K100RS 16V….perfect! I have it with the mounts tipped towards me one click from flat so the spoiler is close to vertical. Stock windscreen and I am 5’9”.