Yep, sounds like Vanos rattle and the only way to make it stop that I found is to replace both of them...which I am currently doing. There are other ways to "mask" the sound i.e. running oil cleaner and then using a heavier weight oil -both of these I have tried and would not advise as I believe they may have been contributing factors in my chain guides disentigrating. Oh and by the way, the Vanos units are about $450/ea and you have to have the special tools.