I'm not too bothered anyhow as i have another motor.
Even if you had the bypass if the filter gets real wet (submerged) then that moisture is still gonna end up in the engine, ok but in small amounts but this ain't gonna make the motor run right??
Apart from that i'm sure its not too good for the filter.
I know the Gruppe m has a drain hole but there is alot of water out there today, does everyone chek regularly that the drain is clear??
Drive safe in the rain chaps :!: