ATM that already has a hose coming from the bottom of the stock boost soelnoid. Also the hose had a 90deg joiner on it which makes me think in must have joined to another hose somewhere?

I taped up both the hoses to see if the noise would go away but it doesnt so it doesn't. Ive gone over the whole side of the car heaps of times but I can't find anything :S I think ir eally need a photo of someones engine bay or to see it in person.