WTF? Vanos or something else?

[equ]

By the way, both tabs have been found. Nice to be 20mn drive from a shop dedicated to the s54. They work 8am to 6pm, but when I was picking up at 9pm, owner was still there doing his tuning/dynos etc.

I didn't realize that my vanos had a rattle (magnified by exhaust). It must have crept up on me, so I never really noticed it. I had literally started scoping out sound insulation.