The OEM PCV valve is installed directly into the valley of these engines. Unfortunately, it takes internal crankcase gasses and deposits them directly into the lower housing of the supercharger. Because the architecture is integrated into the engine, there is no way to vent the system or connect an external oil catch can into the system. This PCV valve bypass replaces the OEM PCV valve and allows the user to do what they wish with the crankcase air flow.