Dawes Device

[Probe Dude]

The FDMBC will not "let all the pressure by into the actuator" once a
pressure level is reached.  It will drop the pressure across it.

If the FDMBC is set to 4psi, then whatever pressure that is going in will be
4psi lower going out.

The downside is that the FDMBC is also a one way valve, so that any pressure
built up at the wastegate actuator will not immediately go away except
through leakage around the FDMBC ball.  So you could run into a problem
where the boost quickly decreases and only slowly comes back.

In summary, in the "forward direction", the FDMBC is a pressure reducer, it
does not open fully at a set pressure, and in the reverse direction it is a
blockage.

Dave

>The little Four Dollar Manual Boost Controller will block the pressure from
>the intake to the wastegate actuator until the pressure overcomes the
>spring, and lets all the pressure by into the actuator.