weird noise when i push gas

this didn't start happenin til after i put a filter on to replace the airbox but when i push the accelerator in a certain amount the engine makes a whistling noise n if i push it in more or let it go the noise stops, it only makes a noise when i push it in a certain amount..is anything wrong? n what can i do to fix it

mine does the same thing too. i heard that it is something to do with a cai.:screwy: not sure why it does it. but from what i hear most with a cai on it happens to make that noise.

i don't have a cai tho i jus have a filter instead of an airbox

I've got the same thing on my 94 GSR. Not even at 1/4 throttle it does the same whistling noise. Sounds like a leak or something loose. I spent 2 hours last weekend tightening everything that could possibly cause the noise. Still does it...makes me feel better that I'm not the only one.