On the way to Audi driver show i managed to brake another part of the vacume/breather circuit... The part number is ... 058 133 753 B Its a strange looking Y peice from under the inlet manifold. Its basicaly broke into two. After removing it and looking at the part i cant decide weather it has broke or just popped. By popped i mean there doesnt seem to be any signs of a crack. Is this a deliberate weak point to pop before it damages something more expensive ??