ok .. here the deal .. i got this GST it has a 14b and a type s bov and i think its pretty much stock i think .. dont know much about em yet and not even sure if there is other mods..
the car seems to run good running closed loop
but pulls harder running open atmosphere... can someone explain?

closed loop
pros .. nice and quite swoosh sound .. no one suspects a thing
cons.. seem slower

open atmos
pros.. seems to pulls hard wheels brake traction with ease
cons.. ricer phssssssssst!!!!!!that everyone can hear
idles drop lower between shifts or comming to a stop fixed it by messing with the
biss screw.. now it idles from 950-1600 around there ..
can anyone explain this