If bank 2 is cylinders 5 6 7 8 and camshaft B is also bank 2 i think its a mad coincidence that all coils can go down on one bank .
If the cam stayed advanced on that bank the whole bank will run rough and cylinder missfire detection count will be triggered , looking at the orginal codes cylinder 7 is not there .......bit strange but i would follow the codes for that cam position .
Swap coil sticks from one bank to the other , if the codes stay on 5 6 7 8 sort of proves its not the coils , if it transfers ..... yes sounds like coils
Also when running in vcds data blocks you can see where cam advance is by means of degrees , if it has a cam sensor on every cam this is good because you could see all 4 cams ......some quad cam stuff only have a cam sensor on one cam per bank ....so for instance the exhaust cam could be stuck advanced but the sensor is on the inlet so the managment wouldnt see it .
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