Strange "Wind-like" Noise From Engine?

Happens when rolling along or generally moving..

I can hear it when I'm driving then I dip/press the clutch and it goes away so its definitely the engine or something not the actual wind lol.

Its louder when I'm doing about 30/40 in a high gear, probably just because I can hear it then.

Now I think I need a new engine mount, cant remember which one I need but I'm just going to buy the whole K-Tec stiffer mount package but cant imagine this would be the cause of the problem?

Any suggestions?

Steve.
 
Could it be to do with that little butterfly valve air thingy (worst explanation ever...) but thats usually where right up in the rev range you can hear it?

Perhaps get Paul to give it a look over on wed
 
Butterfly valve?
Literally cant explain so someone else might be able too, see it posted before but its not constant, its at higher revs and like a little trickle of air type noise. Think its just the valve opening and closing

guess its different though if your noise is constant