I've looked through the workshop manual but can't find what party this pipe is. It comes from the lower left hand side of the engine block and goes into the air box just before the throttle body.

I can't tell a difference in idle or running between it being plugged in or plugged out and there's no errors or dash lights either way?

Does anyone know what the part number is and what it actually does? I broke it and it's currently botched with flexible hose.

I make it to be LR084276 which is listed as a turbo boost pipe.

6K683E in the diagram.

Much appreciated Nilrem!

Only £48 for a little pipe eh? Bargain!

So am I right in saying that without this pipe the turbo effect would be zero? Seems a really thin pipe to be responsible for all the turbo boost?

All the "boost" doesn't go thru that pipe.

What the pipe does I don't know. Maybe control mech for the boost

I was wondering if it's just some sort of blow off or relief pipe for excess turbo build up when going off throttle?

Really interested in its job, as I said, there's no loss in performance or dash lights popping up