A vehicle incorporates a turbocharged internal combustion engine and a crankcase ventilation system. That crankcase ventilation system includes a first vent line connecting a cam cover at a first spigot to an air inlet duct at a second spigot. In addition the system includes a second vent line connected between the crankcase and the intake manifold of the engine. A one-way valve is provided in the second vent line. A restriction is integrated into either the first spigot, the second spigot or a quick connect that connects the first vent line to the first or second spigot.