hey im looken into picken up sum itb's for my b18c5 i dont really kno anyone in my area with them... i live in washington it rains 9 months out of the year with itbs would i have to worry about any kind of hydro lock??? if so is there any type of filter thanx for your help im deff a noob wen it comes to itb's im more of a turbo guy but with the c5 i dun wna boost lol