Garrett 451274-0005 Non EBPV High Flow OutletThis upgraded high flow turbo outlet adapter is a great upgrade to remove the stock butterfly valve. The factory Ford Powerstroke turbo comes with a valve Exhaust Backpressure Valve that closes and opens during engine operation. The Garrett high flow exhaust adapter Ford Powerstroke 7.3l 1999.5-2003. Genuine Garrett bolt on part.Sometimes this valve has a tendency to stick from soot build up or a faulty electrical signal and can cause obstruction of the exhaust. This raises your EGTs and can also cause you to lose response from the turbocharger. Garrett's adapter plate that works with the factory OE turbo. The adapter plate removes the factory EBPV valve and allows for a smooth free flowing exit for the exhaust gases to pass through the turbine wheel. This is a direct replacement for your Ford Powerstroke and will solve the dreaded EBPV issues that so many owners have had with their 7.3L engine.