Trouble with this is that it will be illegal in most countries as its venting oil straight to the road surface.
Raphy - you can get away with it in France at the moment but the Control Technique (MOT) for motorbikes/m3w's becomes compulsory next year....
Not a great modification for other road users such as motorcyclists?
Pipe should vent into a catch tank....its not difficult to acheive.