TB sound not normal

i am used to hearing the sound of the throttle body with not having the factory box. but today i noticed a high pitch whistle when i accelerate around 30-40% throttle, i have never heard this sound in a car before. it actually does sound like some one whistling in monotone. any help is apreciated

Ever get this solved?

Do you have any debris in your intake? Holes in the path letting air out?

nope, i check ed it out yeasterday, nothin tnere. and i still cant figure it out.

Pontiac did have a recall on TB screws but I do not know if it was both the N/A & S/C engines or just the N/A.