I just purchased a AEM V2 for the S2K and I was curious which drain plugs people are talking about sealing up in order to prevent water from leaking down onto the filter while the car is parked and it's raining or I'm washing the car. If anyone could take some photos of which holes they have plugged and what they used to plug them, that would be great.

 

Here is one of them:

There are other ways the water can get in.
However, you would be far better to make yourself (or buy one - I believe Injen makes one now) a filter "umbrella".