Re: Intake choice (beetlebuzz)
With the Ram Air setup, you are still using your factory airbox (and your factory paper filter if you wish). All of the special ducting/mod is done at the front end of the intake to the airbox. Benefit to this is we're not having the same type of problems with the MAF sensors that the other CAI with oiled cotton filters are having. You can, of course, install a panel filter if you wish....but why take the risk.
As far as water making its way up the intake, I have not had any problems to date. I normally swap-out my blinker with another un-modded unit when I know that I will be driving in rain. I have been taken by suprise several times, running into quick showers, and have not seen any moisture in the airbox (after checking for testing purposes).