Its a breather hose (like on your old XE engine). It doesn't need to be conneted to anything but I hav a feeling that it routes to the inlet manifold which means there may be a hole in the inlet manifold now when the hose is supposed to connect. That will need blocking.
aye...this bit i highlighted is the bit that was sitting in the engine bay...there must be sum kind of nozzle or sumthing eitherside if the plastic thing so the pipe fits onto it? casue this one aint got em but obviously did have at sometime...so i need another one of these then yeah matey?
Go to a pet store, and ask for a one-way valve for your fishes' tank. You'll get two for £2.
cheaper than any of the 'tuning' jokers.
Flows better, too (scientifically tested by blowing throughlmao )
A MUST for high-boost turbos Just make sure you install it the right-way round (or else you'd be boosting your camcover!)