Weird noise
Hey guys. Ive noticed a weird drone/vibration coming from my truck and about 2000 rpms, while accelerating. Its annoying. Does anyone have any ideas? my first thought is an exhaust leak? Maybe? ...help?
well i took apart my whole airaid system, cleaned it all, checked for leaks. cleaned my throttle body while i was at it. - what a disaster that thing was :S - put it all back together and the noise is still there. 
anyone?

anyone?
it sounds like its right below me as im driving. Im going to bring it to an exhaust shop after the weekend. I had the cats changed out a couple weeks ago, im guessing they suck at welding.
is it only when your accelerating? is it through a wide range of speeds or only at 2000 and are you sure its coming from under you or is it coming more from the rear end? You could just need t grease the slip joint or it could be something along the lines of a pinion bearing if so


