hey guys what's up. ok well i got a question about my filter on my intake. for the past little while when i turn off my car it sounds like my intake is winding down or something like that. it kinda sounds like when you turn a vaccuum cleaner off. like that low "whhiiirrrrr" sound. is this normal, or is my filter dirty? i can't think of it being anything else. i figured my filter might be dirty, but i'm not sure. if someone could let me know what's up i'd appreciate it. thanks.