Ok so I took my car to valvoline for an oil change and they said I needed a new air filter. So I told them to go ahead and put one in. Well the next day I'm driving I get on it and I can hear air being sucked in really loud. So I pop my hood and see that they didn't put my airbox back together right and it opened up. I was right down the street so I took my car back and they fixed. Now when I get on it it is almost as loud as it was when my airbox was was open but the box is closed. I was wondering if it could just be because I have a new filter or if there could be a hose or anything off. I looked but all I can see is the top and side of my airbox, I was wondering if there was anything on the bottom that may have came off or anything. By the way it's a 2010 wrx with a turbo back exhaust.