I've accidently floored the accelerator when I've started my 540i A.

What is your question?

Now the car has a clipping sound, almost like the fan touching something, coming from the timing chain on the rightside bank of the engine. What could this be and what will need to be replaced? The car still starts and idles with no missfire. Idling is a little rough though with the clipping sound very load while idling.