Hi, I'm new to the forum.
Sorry to resurrect this thread but I have a similar sound. I feel mine is much louder though and I'm struggling to ignore it. Is this the injectors too or should I be booking it in at BMW? The cars new to me, I've had an M140i in the past and I don't remember that being this loud. That M140i had 15k on it.
https://youtube.com/shorts/95Eo5oypviY?feature=share
I took the cover off to get in close but it doesn't half sound loud. The engine is smooth as silk and seems fine...just that noise urgh!
This car has covered 30k