check whether ur oil level is reducing
if yes turbo seals n need service
open ur air filter pipe/hose
check if ur fin got free play front and back or sideways
if front n back then the fin will touch the compressor housing and make whistling noise also
aiyoh...now i change to SQV..same problem occurred...no sound from SQV...and i addd an extra injector, i i saw the connector of the intercooler is quite oily..do you think that the connector need to be change? do you think that the connector loose when the oil soak in it?? help help!
car engine wiring harness (from injectors to air filter, maybe it is the sensor wiring, not sure) got a lil torn on the harness.
can get any wiring cover thingi can get from hardware shop to cover back the wiring...