i hear the same thing coming from my clutch, my dealer didnt know what is was...n neither does any one else on these forum. it was talked about once or twice but everyone tried saying that is the bov, which its not, but yea definately cant figure out what the sound is.
(uhm) how much psi are you runing? The first time I drove my MP3 with the turbo on it (8 psi), the clutch was slipping like hell!
I will changed my clutch plate on the MP3 as soon as my dealer will receive a new stock plate. My wife don't like the carbon/ceramic clutch that I installed when I had the turbo on the car.
My MSP does that stock. The dealership ordered a new cluth assembly from the master cylinder to the pedal. Still don't have it, but it's "on order". They wouldn't switch my 03 spring to the newer 03.5 spring, though.