Did you figure out your other plugs/vac lines then?
The one pictured by the BBV is the bbv solenoid, usually if you unplug the connector to this it limits the car to 4-5psi. I would definitely have it hooked up along with the vac lines, there will be one open vac port to free air on that, I'd have to double check which one.
The other is evap like said above, you can disconnect this an cut/plug the vac line coming from the firewall. Make sure it stays plugged. Paul will have to delete the codes from the PCM. Paul is pretty handy with this stuff as well if you have questions.
