Hello again I have a problem or / or still with my B4 2.0 90 Ps ABT Idle speed top except shortly after start it goes out after 50m at the intersection is not so wild but under normal driving behaviour you could think he gets short time no fuel but only at quarter half or three-quarters gas with full gas it runs without problems! you can also hold it like zb at the au to 2800u/min then he runs a few sec to 2800 then breaks away until ca 1900-2100 then he comes back then always that goes up and down!!! Changed or checked complete ignition system candles redistribute on the oszi you see that in the moment where he breaks down the ignition is available is all i.o is! engine temp energ for control device new! oh yes problem is always there whether engine cold or warm outside cold or warm while the last week when it was not so warm he ran around the 10-15 degrees! petrol filter new petrol pressure have ok to the sample with a pump from nem canister to run the same control unit?