Had a cousin pop over and he wanted a spin in the car, took him out and it was running flawlessly, going like shit off a shovel, then I thought I heard a weird noise, turned the music down and it got louder and louder. It sounds like someone letting air out of a tyre but 100x louder, I couldn't hear my exhuast it has become that loud. It only does it when it hits 3,000 RPM. There is no real noticeable performance reduction. Anyone had this? I've made two videos to try and demonstrate the noise but it is hard to capture. It sounds as it if it is coming from the drivers side, intercooler hose popped off?

http://www.youtube.com/watch?v=SLkKp...e_gdata_player

http://www.youtube.com/watch?v=0vXFr...e_gdata_player