How old are plugs? Often random misfire from dirty injectors. Techron for example.

Clicking might be Valvetronic related can your scanner view performance data realtime?

The first step to diagnose a problem with 1-2 cylinder is to swap coils with one from non neighboring cylinder.

If the problem follows the coil there's the weak link.


–awr–

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)