Boost problems. possible leak NEED HELP ASAP!

[90S13DriftKing]

RB25det.... I was running 120 yesterday and my brakes went out.... nightmare. Turns out my brake booster line came off of my intake manifold and i was lost all vaccum. I put that back on and obviously it was barely on for quite some time and my car started running nice. Well with the vaccum being fixed i was getting my full boost at 16lbs. It ran good for a few miles and then sounded like i was losing boost so I checked my standalone and everything was reading normal there. My boost gauge then said I was pulling 6 PSI. It sounds like the boost is going no where when spooling and no response to the engine. Do you think my wastegate could be stuck open or a bad seal or something elsewhere? The motor is fully built and all my sensor reading are good on my power fc so I know everything is checking up. It sounds and seems like it is a turbo problem...also whenever I give it gas the turbo (with the sound of the leak) sounds like it is not spooling smooth. it is kind of sputtering.
Modified by 90S13DriftKing at 8:16 AM 11/26/2008

[90S13DriftKing]

turbo surge maybe? think my BOV may be bad.

[rotorolla]

build or purchase a boost leak tester .Might not be your problem but is a tool every turbo car owner should own. You'll be suprised at how many leaks there are .this guy makes a nice one http://cgi.ebay.com/ebaymotors...Tools