lol i just went outside and tried listing to it...it was a louder than the sound of the engine runnin and theres also a humming noise i checked out the filter and it seems to be fine you cant actually feel the air blowing or gettin sucked in you just hear it real loud and i cant figer out if its air going in or coming out .. the problemhas been going on for a while and i thought it might be normal but people dont like standing near my car when its running becuz it sounds like it mgiht exlpode ...