Whenever i get my car up to high speeds it starts making this really loud clanking, buzzing sound, it doesnt do it all the time and when the noise starts my handling/power nothing is affected. Each time i run my car the noise starts at a higher speed first it was at 95 now it doesn't make the noise until 110 what could this be?

 

Ur going too fast? Really though, look for something loose on the body first off.

 

loose sunroof deflector?
do you have a rear wing? is it attached properly?
mudflaps flapping in the breeze?
fender well liners?
the covers under the engine?


could be zillions of things.

 

My bet would be the sunroof deflector. Mine did the same thing the first time I ran the car up to ~120 mph. Scared the hell out of me. I just tightened it down and got some lock tight. No problems since.