I need any idea about whats going on. I dont believe my car is happy when is going a high speed. hmmmmm. It happend only when I press the accelerator all the way in. or when is going around 70mph.... where is the high whitling coming from?

sounds like a vacuum leak, check all rubber hoses for cracks where they connect, if you find any, cut end of hose if it's long enough to re connect or replace hoses.

If it has the Supercharger, that's probably what it is !