chanjunc

So today while driving on a 2 hour roadtrip, I encountered a really high pitch squeaking noise that I found to come from the passenger rear. It only squeaks at 3800/3900 rpm at any gear, and in neutral. I couldn't pinpoint the noise even with the car jacked up and me underneath. I torqued all the bolts to my testpipe and my exhaust thinking there was maybe a leak or something was loose enough to make it vibrate. It is loudest and most clear when your ear is at the rearwell of the passenger rear. I recorded a youtube video where you can hear it distinctly. I placed my phone on the ground by the tire and just revved trying to keep the rpm at 3800.

Not sure if it has anything to do with my exhaust system or not, but I cant think of what it could be. I have a greddy spectrum elite single with a berk test pipe -- both of which I've had for 8 months w/out a problem. The weather has gotten cold out and may have something to do with it?

Youtube link!!

Help please!!!

chanjunc

anyone have any clue as to what it could be? :/