u/Educational_Name9026

By accident found strange clicking noise during acceleration on neutral, actually when RPM goes down

After investigation the wastegate and phase regulator valves(which are ok)

Found that such noise disappears in the moment I disconnect one of the AVS(valvelift) solenoid. So that system is disabled and noise didn’t occur.

So the location of noise I knew

Question is , such noise is normal operation of the AVS solenoids or that an issue and has to be checked by service? No any faults in the system or during driving

Maybe someone, has the experience with it before