Misfire-problem 330i

So the other day i changed my air filter from a ''sports filter'' back to original air filter.
The day after, i get a misfire code on cylinder 2 and 4.
I tried to switch coils on cylinder 2 and 4, but then i got a misfire on 5 and 6.

Today i read the codes again and it says misfire on cylinder 2 and 6.

I do not believe this is caused by the replacement of air filter, as the car drove fine right after, and i checked all the wires surrounding to see if i pulled something by accident.


I am not sure what to make of this.

Car: BMW 330xi 2003
Milage: 210.000km(130.000miles)
Coils have not been changed before as to my knowledge.