Okay, so have received the red boost pipe. Looks good quality and much superior than OEM. Not got round to fitting it yet, but I was just having a fiddle as I thought that the leak seems much heavier than just weeping out of this deteriorated pipe. I removed the turbo air intake pipe and what do you know...LOTS of oil coming out! This is most certainly the main culprit! Now, as I understand there should be some oil within the turbo, but I thought only a light coating. This seems excessive to me. Have a look:
The turbo housing is covered where it has splattered everywhere. The seal between the pipe and turbo inlet isn't worn but is quite easy to slip on. I guess this should be sufficient if everything was running properly but isn't designed to seal against this much oil.
What do you guys think? Turbo needs a rebuild?