This is a discussion on the Turbo is not boosting..any help ? within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Knock Sensor?...
sounds like ur missing the restrictor pill between the compressor housing and the tee piece inside that black hose
not sure about o2 models like but u only get wastgate pressur (0.5 bar ) when this restrictor is missing , it is a small brass bullet shaped thing inside the hose coming off the turbo its self before the tee piece it should have a small hole through it
what could cause the lose of a restrictor pill? im have the exact same problems... never though i could actually be missing my restrictor pill all of a sudden tho? sry if thats a dumb question.