I will give vanos solenoids a try next.

Can I just unplug them and run the car for couple days to test? If they’re the culprit, unplugged should not cause a misfire correct?

I did new spark plugs with Iridium IX and idle and drivability was much improved but cold start random misfire with cyl 2, 4, 6, 8 was still there.

Again, not every cold start and intermittent days.

So today I tried swapping the coil plugs around to see if the misfire cylinders followed but it stayed the same at cyl 2, 4, 6, 8.

But again not always all four sometimes just 2, 4, 6 or 4&6 or just one, never consistent and really random.

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2005 Imola 4.8iS