50MM ALUMINUM RED TURBO TURBOCHARGER BOV BLOW OFF VALVE TRUMPET 35 PSI BOOST Other Exterior Parts & Accessories 2009-2010 4

2009-2010 4

*Autocomp Technologies: 1079202

64526918753

XL3Z1104AD

& R550 2007-2011

50MM ALUMINUM RED TURBO TURBOCHARGER BOV BLOW OFF VALVE TRUMPET 35 PSI BOOST Other Exterior Parts & Accessories 2009-2010 4The Blow Off valve (BOV) is a pressure relief device on the intake tract to prevent the turbo's compressor from going into surge. When the throttle is closed rapidly, the airflow is quickly reduced, causing flow instability and pressure fluctuations. Surge can eventually lead to thrust bearing failure due to the high loads associated with it. Blow Off valves use a combination of manifold pressure signal and spring force to detect when the throttle is