Hard start and rought idle/power loss

[t_marat]

I did the reset yesterday, left the battery disconnected for the night. Cleaned the crankcase ventilation connector with a carb cleaner, as it was very dusty (leaking slightly).
So far I did not have any problems, car did not stall and no rough running/power loss. But I guess its too early to say for sure problems are gone.

[Morgenster]

You might get lucky or not. But if the problem gradually returns it's most likely a DME sensor out of tolerance. Doing the reset right after plug changes or any engine work can help the engine adjust to different running conditions, so if you didn't do this when you changed the gasket and plugs it could stay good.