to tell u the truth, that thing is more of an engine ornament. it's not like ur going to gain any horsepower off of it. i admit, i had one on my crx and it looked cool but that was probably its only purpose.
if anyone is thinking of getting this eventhough they already got a cai, i wouldn't reccomend it. just use the stockhose and connect it to the cai so u get cold air, instead of the hot air from the engine bay. of course, if they want it for engine dress ups, then by all means, get it.