What nttg is getting at is an atmospheric bov on our cars makes them run very bad. Stalling out and piss poor idle are just nAming a few of the downfalls, I speak from experience.
If you really must know and don't want to take our advice than whatever I suppose.
You will need an adapter/mounting bracket, along with a new gasket from Subaru.
The hks blows it's seal at around 16 psi from what I've seen, meaning it leaks by allowing you not to hit full and proper boost.
And than if that happens on the real deal, I would imagine the knock off couldn't be all that great.
Sorry for the bad news man, we're just trying to help by being honest.
2002 blaze WRX- sold:(
2011 Wrx limited
99 Fozz- sold
Eagle eye crew