If it's under the hood,
I'm going with a dirty throttle body plate. Clean both sides of the throttle plate w/ throttle body cleaner
If it's external, like a wind noise,
look for plastic aerodynamics being pulled loose, scraped up and now "ragged" on the edges. Even luggage racks make noises (especially if the adjusters are loose)
Sometimes it's quick and and fast find a wind problem (like a mirror or trim or other) BY CHANGING IT'S SHAPE, even slightly. Achieve this by slapping a few inches of that "Green or Blue Painters masking off tape over the suspect area, then see if it goes away or changes at all.
Return with good news,
Monday, March 6th, 2017 AT 5:59 PM