you'll have to have the wastegate hole on the turbo welded shut. If you just disconnect the vac line from the internal gate actuator it can blow open during high boost.
----------------------------------------I used to have a 420A...'92 TSi AWD11.8 @ 119mph470awhp 405 ft/lb torque30psi on E85 w/ Borg Warner S256 TurboMy DSM Registry: http://www.dsmregistry.com/166