Something wrong with 5sfe..?, ..what is this swirling sound? Options

[LatinKraze]

This noise started last night. I know I pushed my car twice to 5k. I was showing my cousin the art of 5spd. Well anyways. When I dropped him off at his house I notice that (in 1st, 2nd, and 3rd gear) I get this pulsating, hissing/swirling sound at around 3.1k until I shift to a higher gear. I pulled over immediately and reved my car by hand, and no sound. It seems to happen when I'm in motion. The noise is almost like taking a rope and twirling it real fast to get that almost whistling sound. Has anyone else had this happen? I cant seem to narrow it down to where it's comming from, since I'm the one driving. It comes from the passenger side and I dont think it's any of my belts. Any suggestions?

[macavely]

did u hear the sound being u ? cause if u did it might be ur fuel pump .... and did by chance hit ur AC .. i did that once and was like what the fook .. that sound every time i reved i would here it then looked down and saw the AC lite one tune dit off sound was gone