Originally Posted by throttle_07
I just put a cold air intake in my civic. But if it rains do i have to take it off or will the filter prevents water from going into the engine. Or do I just have to take it off completely during the rainy season.
You wont have to take it off everytime it rains, but you dont exactly have to run over puddles to hydolock your motor. A bypass valve will help the absolute most, but even then, you can't guarentee anything. The filter itself will not prevent water at all. Your best bet would be to take it for good during the rainy season.