Works very WELL !! I have ran as much as 24lb of boost with the HPH kit installed and no more oil mess. It basically recirculates the oil out of the snout vent into a baffled canister and drains it back into the blower case. The canister has a vent at a level above the blower and the baffles deflect the oil enough to keep it contained. Once installed (15 mins) it takes a few runs to get the level of oil correct since some stays in the canister. Very well designed kit should be stock on the Kenne Bell from the Factory !