I have an Evo 7 ECU in and evo4, so the harness is missing some connectors. I have a Perrin 3 port boost controller I want to use to allow the ECU to control boost mainly to utilize the afr safety feature.

So my question is how, do I set up it up to the ECU? I'm reading that the solenoid has a 12volt to it and the ECU sends a ground signal. What do I need between the ecu and solenoid? A relay? And pin 11 is the correct pin?