The part above the boost solenoid, that the vaccum pipe connects to the map sensor ?

cheers

 

Pressure exchange valve - used so the ECU can read atmospheric pressure when it needs to. And you boost solenoid is not plumbed right, by the way.

 

Hi Bud, thanks for the reply, thats just a pic i got off google.

I did some digging and i found it to be an EGR solenoid

http://www.ebay.com/itm/98-03-1997-97-Subaru-EGR-Emission-Vacuum-Switch-Valve-PRESSURE-SOLENOID-/271340658493?pt=Motors_Car_Truck_Parts_Accessories&hash=item3f2d29df3d&vxp=mtr

 

EGR implies "exhaust gas" to me...don't think it's related to that.

 

I have no idea LOL, just, if you google EGR solenoid loads comes up and shows the part im on about LOL