I would get one if i were you. My friend put an CAI on his teg, before he put it on he was all like "nah as long as i don't drive into any big puddles..." but now hes so paranoid he barely drives it in the rain if he can help it. An extra $60 is better than the thousands you could be spending to rebuild your engine.

Also, sometimes you might not be able to avoid going through a puddle. Lets say if its raining out real hard, theres lots of traffic and you see a huge puddle about 15 feet away. No time to stop so you gotta go through...