engine making a whooshing sound when accelerating

Hello, This sounds like a large vacuum leak, and may be associated with the brake booster, the intake manifold gasket, or, more likely, the intake air tubes from the throttle body to the filter. Also, if the filter is missing, you get this noise. If you have any other questions, or need more information, let me know, or, if you prefer one of our certified shops diagnose the issue, see the link below: http://repairpal.com/bmw-within-10-miles-of-dexter-michigan-48130