Estoril 4.6.... siiiiiick!

I'd say that sounds relatively normal. Keep a close eye on it. Do you get any chain noise on start up? From my research, it seems like that is the best indicator of timing chain guides starting to fail.

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2002 X5 4.6is - Titanium Silver / Black Alcantara - Dinan Stage 2 - Bilstein/Eibach - Brembo BBK ----SOLD---
1993 318i - Brilliantrot / Tan - bone stock daily driver