For those of you who have this, what does Dinan do to keep too much water from being sucked in and killing the engine?

Many of us have added the RPI scoop. Dual scoops for M5 owners have twice the risk?

Or do you guys not drive these beasts in the rain?

I see a small single drain hole at the bottom of the intake muffler aka airbox of the 545i.

Thoughts?

 

When driving in rain you're fine. Even in most cases where there is a big puddle - you're fine, the intake inlet is more than 15 inches off the ground, so if you're skilled enough to avoid driving into a lake you should be okay. Also, when going through a deep puddle drive EXTREMELY slowly, remember that the car will create a bow wake, similar to a boat's, and you want to reduce this as much as humanly possible.