vxss wierd windeny noise ???

[Sir VxSs]

hey guys have a vxss theres a wierd like buzzin noise i get on the freeway well really soon as i get to about 60km... its a buzzin winedy noise sounds silly but really kant pin point it whether its front or bak i think it may be both.. the wierd thing is wen i take my foot off the accelerator it goes away and is quiet as. Soon as i hit da gas a touch comes bak??? ive got 20z on atm thought it was road noise , changed too stockies didnt change? not da diff koz its from frnt , and wheel bearings were my last thought but dosent seem to be? Any thoughts would be much appriciated thank you

[HBDCalais]

is it when you have the demister on in the front windscreen, as i think its the acuator pump or something cant think of it off hand which is vaccumm opperated
next time you drive turn the air completely off and see if it changes or change settings from re-circulate and fresh air and see if it helps

Edit

[Vt_vic]

sounds like air getting through somewhere

[Sir VxSs]

cheers thanx guys will chek both