I used to use the 3 port solenoid on my 1995 WRX, but have now got an AVCR and use the boost solenoid that comes with that.

The problem is that i still have to have the electrical connector connected to the 3 port boost solenoid or i cant boost over 0.7 bar, is there any way to disconnect this completely now as its not being used

 

by turning off boost control in the PFC I believe you run.. in the ETC menu with a commander or datalogit etc.

 

Havent put the PFC in yet, putting it in tonight, so will try that.