It seems that there can be an issue with oil from the oil tank building up in the airbox via the breather pipe. Has anyone attached that pipe to an oil catch tank and plugged the hole in the airbox?
I guess it could increase oil consumption if it is then subsequently burnt? I would guess though if this happens the bottom end is pressurised and there is an issue?
nightspirit has done the mod on his Tamora. IIRC he just went for a small breather filter and re-routed the hose to the front of the engine bay and a plug blank on the airbox.