I think i have an exhaust leak. it started to appear several days ago and now sound bit louder. however, you can hear it most when seating in the car, it seems to come from front-lower part of the car. if you pop up the hood you can not hear it that loud. I took 3 videos this night. one idling from interior, one driving and one idling while hood poped up. you can not see much but thats not important. you can hear it, just turn your volume up, you can hear the tone better.

idling, interior:
http://www.youtube.com/watch?v=GtgpEvQYMEE

driving:
http://www.youtube.com/watch?v=1KzZaCu-DCw

idling, hood poped up:
http://www.youtube.com/watch?v=z6zN2rJYs2U

 

nismo? whats that doing in your 7?

 

thats not nismo, thats D1spec