For a few days, I had the feeling that the performance was not quite right anymore. I tested it more closely on the AB today. 225 hp and tormented at 230 km/h. Even in the summer it was much better (260). Then I noticed that it was turning like this from about 3500 rpm on rather unwillingly. It turns up but I have the feeling as if it wasn’t breathing properly. Downstairs everything is OK. Does anyone have any idea?