Me again, another noise i have not heard before wonder if anyone knows what it could be.
After acceleration and about 0.5 reading on the boost gauge when deacceleration is when it happens and i can only describe it as a kind of low pich noise that seems to travel from one side of the car to another.
This makes me sound a bit nutty but its happened 3 or 4 times - not everytime i drive it though.
Hmmm Graham - more info.
Which side to which side? from the engine bay you think? or could it be suspension? any particular revs? brakes? etc.