Originally Posted by 424wrx
ive had a perrin cai on for about 4 years straight. ive been though hurricane sandy,blizzards, flooding rains, etc. and never had an issue. you arent gonna get salt buildup. it is inside the fender. there is a spalshguard there to protect the filter element.
cobb is not CAI.
I wouldnt worry either. My brother has the SPT intake on his 05MY WRX with no box of any sort. The filter gets dirty quick but thats about it.