Gen4 Haldex on the facelift S3

According to the specs in this thread, my car has the OBR version IV Haldex.
One thing I've noticed is, unlike FWD cars, the back end does not dip down a little on slow to quick take off acceleration.
I's assume some power it thus going through the rear wheels.

Also the IV Haldex only requires an oil change i.e. were older version also need the filter changing to.