for the square shaped tube that connects in the front of the air box, there is a part that sticks out further on the bottom of the air box. Is that part supposed to be inside or outside of the square shaped tube? right now it is inside of the tube and the two clips on the side are in place. My car sounds fine while driving but when I first start it up, it's louder and not smooth sounding. It's almost like a popping sound.
Production started: 2015 320i xDrive | Imperial Blue Metallic/Black SensaTec | Sport Package | Lighting Package | Moonroof | Heated front seats
Last edited by Ryan323i; 10-08-2009 at 01:25 PM.