I ran a 33 GTR ( seriesI, v-spec) at WSID a while ago, she had a power f/c, batmil front pipes, ex-force catback and ebc ( 1 bar boost) she did 12.3 @109 mph.
Stock 33 GTr boost is about 10 psi ( with restrictor in and stock exhaust).
GTRS have 2 recirculating valves, they are on the drivers side inner guard ( if you take the plastic inner gurd off you will see them ).
They dont blow any smoke but if you have pods you can hear them .