you shouldn't really be getting any oil out of there other than a very slight mist on the suspension turret. could be a sign that the charger seals need doing. But also, where have you got the oil breather going to?
I've seen people put little filters on the end of the throttle body, you can buy them from any place selling car bits really, or try ebay. It's only a filter though, oil will still go through it.