this is a little work, and you'd need a dremel, take off the black(or do it on the car), and dremel out the area where air could pass..but make sure you leave the structural part that mounts the fog light...that should work, and aloow air through..oh, and on the water issue, just raindrop won't affect anything, driving through a deep puddle will..but that can be counteracted with a bypass..but if you're in a puddle, having the back stuff there or not, it will get wet...you can get the AEM bypass if you have the AEM, if not, I'm sure you could use the AEM bypass...but no worries, just don't drive through puddles that are over a your hood and you'll be fine...and just splashing wont do anything, you need to have the intake submerged so it can suck the air in to acutally do damage..long story short, it'll be fine, dremel the black out or make a mounting bracket out of some metal or something