Hi, Thanks for your help in advance! I'm getting some noises from my turbo on my pd150 ARL engine with standard garret turbo... I can hear the siren like noise but also a bit of a metallic version of the normal boosting sound. I'm guessing worn bearing and new turbo needed? Anyone have an idea of what's gone wrong here? I've attached this film - sorry about the boring visuals - this is just stationary revving: I have recently taken the turbo off, taken it apart and cleaned the VNT mechanism because the vanes were sticking (got an over boosting fault code) . It's boosting ok now but sounds like this. When it was apart I noticed about half a millimetre of play in the compressor wheel. I also added a forge red turbo pipe - could this be changing the sound? Any help would be much appreciated! Thanks!