I have same problem. Probably flaps are closed now, and you have power. If they are open, you would feel it with lack of power. I was on the road trip to Italy through mountains and car had like 120 hp, not pulling like 185 ps would uphill. Then I stoped and with hand rotate to other position that part where arm was connected. And with that I closed flaps, allowing boost to build up in intake manifold.
I change 2-3 arms and each disconnected. Then I found solution:
Sorry for my bad english please. If you have question, just ask.
Also maybe you need, after repair, to calibrate step motor from flaps. I did in VIDA.