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I'm going to try to clear things up.
Firstly the N52 uses variable Valve lift (VVL or Valvtronic) for load control (throttle). VVL is the variable Valve Timing, (vanos).
The Eccentric cam motor controls the valve lift by rotating the eccentric cam.
The engine can operate at any normal RPM with maximum valve lift 9.7mm,
BMW built a fail safe system into the VVL by adding a program that, when triggered drives the VVL to full lift and then controls the engine load with the throttle, just like a normal engine. In this mode engine RPM is limited to 6,500 RPM
Disconnecting the Eccentric cam sensor will probably trigger the fail safe and the eccentric cam would be driven against the stops The eccentric cam motor would be deactivated by a load limit control and the DME would assume the cam had reached max rotation producing 9.7mm lift.
Test by Pulling the plug on the sensor and turning on the ignition, you should hear the VVL motor running to a stop. Plug in the sensor and check the eccentric cam location via INPA. Should be something like 174.5-180 degrees Unplug the sensor, start the car and go for a drive.
You should be able to hear different sounds made by the intake system. Blip the throttle and you will hear the air rush past the throttle plate as it opens.
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