Former E46fanatic, new E53 owner
 

Have to start in the service main category. Also: rocks on the stiffening plate (or sockets and bolts) will cause similar noise. (first hand experience).

I added 50 to my car. Helped a bunch. Velvet smooth idle. Wife's got a 2000.5 model year and I have not had luck boosting her idle.

Oh; hey car had insane rattle before I replaced the CV axles

Did somebody say E46fanatic?

https://uploads.tapatalk-cdn.com/201...ca7ad83dd1.jpg