UPDATE:
I've reinstalled the adjustable droplinks, the noise is gone after softening the suspension.
Seems that the CH steering wheel control module was defective, I'm back on mine now, now everything works again (power-steering, cc stalk) except the paddles.
Today I did a wheel alignment and immediately after the car pulls to the left and ESP is interfering, I had to disable it.
I thought this is because I did a G85 recalibration yesterday (to get the power steering back) with no wheel alignment after installing the AST suspension. I tried to recalibrate G85 control module again, but at some point I did something wrong and now I'm left with this:
Anyway, I haven't bothered anymore with this, I will change the steering wheel control module again in one week so I will have to do it again, I just hope that it will solve the pulling to the left and ESP problem.
In the meantime I left my car at the shop to get a front splitter, rear wing, bonnet/fender vents and rear wiper delete. I've done all this quickly because it started snowing and it was my last opportunity to move it on summer tires.
The new RS4 fuel pressure regulator it is on it's way and I got these thingies: