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[kzimmer]

I have, in the past, completely blocked off my wastegate boost reference hose and blown the gate open with exhaust drive pressure. Exhaust drive pressure will absolutely assist in opening the gate.

[Haggar]

Our waste gate does NOT reduce the pressure of the intake tract.   (there are systems that do, ours does not)

Our waste gate diverts potential energy from the exhaust drive pressure away from the drive side of the turbine.  (our waste gate basically reduces drive pressure)

From 11-14 (Exhaust system) of the 2001 FSM

HTH

 

Hag

[dripley]

29 minutes ago, kzimmer said:

I have, in the past, completely blocked off my wastegate boost reference hose and blown the gate open with exhaust drive pressure. Exhaust drive pressure will absolutely assist in opening the gate.

If the drive pressur is high enough to overcome the holding pressure of the acutator yes it will open the waste gate. But for testing purposes all you need to do is presurize the actuator.

 

I would think something is engineered into the system to allow for the drive pressure pushing against the waste gate.