Odd noise...

Well, Im having a weird noise, either a boost leak or a loose/too tight belt. Whenever I get to about 10vac to about 1psi, sometimes, theres a kind of high pitched noise, almost like a really really small child screaming far away. lol

I thought it was a boost leak, replaced a few hoses that actually were leaking, and my vac stays at like 21-24 now, which is perfect, and I can boost full with no problem whatsoever.

So I guess my question is, can my belts be over tightened or too loose to be causing this noise?

vacuum at ilde sound be ~15in/hg only time you sould see 20+ is on deceleration

It was closer to 15-17 when I lived in FL, im in VA right now.

Still shouldn't change that much, I'm in Mn and its right at 15

Ok 2 questions then lol, what would cause excess vacuum and back to my first question, what would cause that noise?

anyone have any ideas?

Wheel bearing maybe? I dont know. Could be a belt or possibly a misaligned pulley.