HKS Standard Bypass Valve recirculation on the Panda, i received a looooot of questions about my bypass valve recirculation video on instagram and valves in general. *How it sounds? a video of how it sounds with a 3" aluminum intake here: https://instagram.com/p/8EKL5sMZwn/ , remember that i have an HKS Standard Bypass Valve, different brands and styles of valves have a different sound. *It runs better? yeah it runs a lot better and have better fuel economy too, also it runs smoother and have a better throttle response. *I need to set it up differently from a vented to atmosphere valve? A recirculating valve needs to be open at idle, and since it is a closed loop system, no metered air is escaping the system, the valve opens and recirculate it back to the intake drawing in already metered air. This is how a recirculating valve works and this is my setup. Atmospheric valves need to be closed at idle, otherwise the pressure that exists in the charge piping even at idle will be leaking out of the valve.
Under load/boost, all valves need to be closed, retaining the boost pressure in the system. At throttle lift, charge pressure in the system and the intake manifold going back to vacuum causes the valve to open, recirculating the pressure back into the intake or venting it to atmosphere. I hope that answers all the questions. 😎👍
Diagram of a recirculation setup.
