HELP!!!!! 3 port GM boost solenoid
Apr 27, 2009, 04:56 PM
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HELP!!!!! 3 port GM boost solenoid
Need install info on GM boost solenoid with extenal wastegate. tryed to tune with my wastegate duty cycle set at 0 and i was still spiking out. all my vacume lines are place as directed but stillnot able to figure it out. i searched the forums but was not able to find anything using extrernal wastegate. any help will be great.
Last edited by 808boost; Apr 27, 2009 at 05:05 PM.
May 5, 2009, 08:14 PM
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For a dual port external WG you should:
1) Run a boost source to the lower port.
2) Run the NC (normal closed) port of the GM solenoid to the top port.
100% Duty Cycle = Closed WG, full boost
0% Duty Cycle = Spring pressure
1) Run a boost source to the lower port.
2) Run the NC (normal closed) port of the GM solenoid to the top port.
100% Duty Cycle = Closed WG, full boost
0% Duty Cycle = Spring pressure
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May 6, 2009, 06:50 AM
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I use a Perrin BCS with a Tial 44mm / T04Z - 15psi spring running 35psi at the manifold.
Loop the BCS in the same way as you would a regular internal style wastegate and you should get good resolution and control.
Loop the BCS in the same way as you would a regular internal style wastegate and you should get good resolution and control.
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