Alright guys, did a bit of searching and this seems to be a fairly uncommon thing. I've got this squeeking noise that I only get while cruising at very light throttle (17"-20" of vacuum). The noise is pretty high-pitched and goes away as soon as I push the pedal down. It sounds almost like a computer working to its hearts content. As for pinpointing the area it's coming from, it's somewhere up around the dash (possibly the megasquirt?). I'm runnin' out of ideas as to what could possibly make the noise only at light throttle/load.