Description Splitter Blow Off Valve, suitable for most VAG cars 1990’s to 2000’s. Made from billet aluminium, this Dump Valve dumps the charge-air to atmosphere and recirculating creating the dump sound when the throttle is lifted, yet does not give error codes. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably. You can plug either atmospheric or recirculation with provided blanking plug.