i got this intake but havent installed it yet. I read that it is not recommended to install the lower cold-air part unless racing in dry weather. I hardly ever go a track and i wondered how much of a risk it would be to just leave it in there. I know a guy with a celica gts and he has an AEM cold air that is the same design of the place racing. he never takes his off, and drives in rain, etc. Anybody who has this intake? Do you all only use the top part??