Originally Posted by Namek

Your cold air intake wont suck up water unless it is submerged in it, such as a huge ass puddle, if you are worried about it then put an air bypass valve on it also... or build half a box around the filter... Apexi filters have shown to be better than k&n. Intakes will give you what you are looking for with the other propper bolt ons such as headers, exhaust, manifolds, throttle bodies... but intake alone wont do MUCH for you other than add a nice sound.