Blow off Valve & Bypass Compressor Valve

Kinugawa Trubo BOV BCV Works
BOV or BCV: Using the proper blow off valve (BOV) or bypass compressor valve (BCV) affects the system's performance. There are two main types to consider. 

1. MAP (Manifold Absolute Pressure) sensor uses either a vent-to-atmosphere valve or a recirculation valve.
– Connect signal line to manifold source
– Surge can occur if the spring rate is too stiff

2. MAF (Mass Air Flow) sensor uses a recirculation (bypass) valve for best drivability.
– Connect signal line to manifold source
– Position the valve close to the turbo outlet for best performance (if the valve can handle high temp).
– Surge can occur if the valve and/or outlet plumbing are restrictive.