more info: mine seems to be happening at start up and again everytime i'm coming out of a corner at about 2000-3000rpm. as it approaches or hovers at 3000, the buzzing sound is very apparent.

at first i thought it might just be the bonnet latch rattling against the hood, but that is mega tight now.

i'll do an oil change and see how it goes. if that fails, i guess it's off to honda for some wallet draining.