Can anyone tell me how to do this correctly on a 3 port?

I got the 3 port from an older car (now fitted to a MY03 WRX) but im eliminating problems at the moment and i think that this could be a little clogged.

Can anybody tell me what i would have to do to do this on this MY of car?

and what with etc?

Thanks....
Neil.

P.S. if the boost solenoid is a little dirty would the car still make peak boost?

 

i have a 3 port on my my93, i clean it by taking the 3 pipes off, spray a little carb or brake cleaner in (not drowning it) turn the ignition on and off give it chance to turn on before you turn key off again, so that the solenoid can click and get itself going. put the 3 pipes back on when happy with being cleaned and run the engine.

It is working fine by hearing a ticking noise when the engine is running.

 

thanks, ill do that i presume you can spray the cleaning in any of the holes?