When putting reasonable load on my car at around 4000 RPM a high pitched squeal canbe heard with the windows down. I was figuring that it may be my intake, but now I am starting to suspect that it may be internal. Anybody else get this problem?

 

scary I would take it in ASAP

 

sounds like he can finally hear the whine of the supercharger.
all kidding aside, take it in.