[Prologic]

During weekend I did a major head overhaul on my prelci N52B30 (with magnesium cover) and replaced:
Timing chain;
Valve stem steals;
New Vanos gears;
Cleaned HVA;
And intalled MILVS.

After final assembly engine starts, but I as you can see from the picture below, DME tries to lean 3rd as much as possible, while at the same time making 6th cylinder as rich as possible. Of course, car idles very poorly.



What could cause this? I tried swaping spark plugs and coils places, but cylinder issues do not follow.