RJ-M6

Hi Guys,

I’m trying to diagnose a problem on my 2012 s63 and have attached a video for reference. My car also has a renntech d2 modification.

The noise comes and goes and usually occurs after I haven’t driven the car for a few days or sometimes after a few hard pulls/accelerations. The noise isn’t always present and usually disappears after I let the car sit for 30 minutes.

The noise is heard as the rpms drop/ decelerate. It’s usually around the 1-2000 rpm but in the video it’s even present around 4000.

Thanks in advance for any help provided.