Hey guys i made this post a week ago about this high pitch whistling sound
I get intermitingly it seems to mainly happen on the highway it almost sound like a Harmonica, it happends with the radio or AC on or off and i can only here it while the car is moving window up.

I did get some in put about the air vints being half open but it wasn't that
so i'm just trying to get some input on this i know there was one person how was having the same issue

 

Why make another thread?

Do you have a billet grille?

 

The turbo!