Unleash Hidden Engine Potential Supercharger Bypass Valve Normally Open

The whole purpose of these things is to be open under normal driving until you build boost otherwise there will be a lot of stress on the blower ... So, the first thing I would do is remove the actuator and check the valve for smooth operation all the way open and closed. If it is stiff or ... Usually I would think if the bypass valve was opening due to be stuck/broken you should get an underboost code so check for soft codes. This ... That valve is a bypass, preventing boost from building when it's open. It opens when there is vacuum at the diaphragm that operates the lever that pivots the ... The spring is selected and installed to hold the bypass valve open at all vacuum levels and at up to one PSI of boost, and then to allow the bypass to close ... I'm talking about vac in the inlet manifold. Which is where you would normally draw the vac from to open a bypass valve. A bypass valve is not ... From my understanding this valve should be open at idle and cruise allowing the blower to run cooler and allow for better MPGs. I have double ... Just at the point where vacuum turns into boost, it's as if the valve can't decide whether to open or close. In addition to this, the ... Open App. This content isn't available. Supercharger, bypass valve, vacuum operated, Eaton, Kenne Bell, Whipple, roots, centrifigal, twin ... This actuator opens and closes a bypass valve for the supercharger. This valve is open when throttle loads are low and closed when throttle loads are high.