B348xyx,

Would you say this sounds the same as yours? And his sounds like that after a rebuild? As mine sounds a bit like that maybe a little quieter just had a listen been like it since day one from what I recall or certainly since tensioner was done. I have zero startup rattle as well

 Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF