Don, King of the parts diagram
MY11 WRX STi Sedan 6MT
Thought you'd come back on that :biggrin::biggrin:EGR? Shum mishtake shurely......we have no EGR!
As for the BOV mod, I found it easier to strip the whole lot off, connect one pipe from maniofld direct to 'top' (furthest from IC) port and remove the T-piece where the pipework went back into the trbo inlet pipe.
Subaru's terminology not mine(and not necessarily Exhaust Gas Recirc)