for your project, i applaud you.
this is why i love subarus, you look and research and calculate each effeciency from wrapping the intercooler and dump pipes and that intake box.
most just bolt-on from the newest issue of super-street.
for that velocity stack mod, where does the stack face? against the fender wall inside the engine bay? or does it go THRU the fender wall??
i can't thank the community enough for figuring out engine oil, tranny oil combos, maintenance tips and the strong willed DIY-attitude that is a lot more than others where "i just took it to my tuner, magic ensued"