yeah, its only somethign i thought of doing just to check and see if it makes a difference...
not really sure how air in the system(if there was any) can magically dissapear when the car is cooled down while idling and the boiling doesnt happen anymore...
i found running the heater makes a big difference..
im leaning towards the theory of its def coolant boiling in the turbo lines rather than the air in the cooling system.. (although it could be both happening at the same time)
good to hear that its working for some people.
btw the boiling doesnt happen straight away for me, it takes about 10-15 secs to start making the noise and last for about a minute or so(guessing )\
cheers