I'm wondering if anyone can help me I've got a 520d and I'm looking to swap out the standard induction box for a K&N induction box or filter I know K&N don't seem to make one for the 520d anybody know any makes or anyone's I can get otherwise it looks like just get a universal one with the right diameter ? Gotta let these engines breathe the stock box is heavily restricted. I love the grunt of an induction kit aswell it masks the diesel clatter. Help me please?
