hi i drive 06 Z touring i think my Z has some problem with engine or something

when i hit 80mph-90mph between there i hit gas pedal, i hear

some noise like run idle sound, um.. kinda wind sound

before 80mph or over 90mph i can't hear that sound(only engine sound)

i tried to hit 90mph-120mph, can't hear it

even when i do engine break, rpm go to down around 2000rpm,

that time i can hear this sound but it's more quietly.... hum

it's normal or not ???

anyone hear kinda this sound??

 

I would say take it to the dealer but most will look at you funny when you mention those speeds... a friend of mines dad had a complaint at the Honda dealer where he is the main tech, a vibration at 140mp on a new s2k they told him to get lost!!