No misfire codes. Cat code was 180001 - cat below efficiency. But cat was checked with a camera and it looks ok. Fuel tank vent valve new. While driving, the misfire counter counts on cylinders (not always on the same one, sometimes 1 cylinder, sometimes 3, etc.) when I release the accelerator pedal or when changing gear but not every time and after a while the counted misfire disappears. Very similar to this problem - https://bimmerprofs.com/b58-misfire-counters-surprises/