do a search on DSMTuners...theres eleventy-billion posts on turboing a 1GNTOr heres a couple of VFAQ links too:http://www.angelfire.com/il2/freestyle/turboconversion.htmlhttp://www.dsmtuners.com/forums/showthread.php?t=48231
----------------------------------------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