Turbosmart Kompact Dual Port Blow Off Valve suit 25mm Inlet - TS-0203-1022

Dual outlet-type BOV. Dual Port vents both to the atmosphere and back into the air intake. Ports with sequential timing allow quieter operation during everyday driving while getting all the benefits of a vent-to-atmosphere BOV under race conditions. They are easily converted to a complete atmospheric or whole bypass unit using supplied port blanking plug.

Please note; that twin-turbo applications, such as the 991.2 Carrera and Turbo, will require two valves.  Note in the photos of the mounting orientation. 

Why it made the Sone List: OEM plastic diverter valves are a known weak point. The most popular aftermarket replacements also have a critical flaw: if the vacuum lines ever fail or leak, they may not naturally release boost because they rely on vacuum actuation rather than spring pressure.

Turbosmart diverter valves are spring-based, so even if a vacuum line fails, they can still release boost, helping prevent a dangerous overboost situation.

This is hands down my favorite mod so far. The sound is absolutely addictive.