Sounds like a mouse in one of the wheels they run in. I have some wierd sound coming from my car. Its totally speed dependent. You can rev the car all you want and you'll never hear the sound. Sound starts to become adiuble at about 20mph. I dont think the sound speeds up if you increase rpms to like 3000 even at like 20-25 mph. I have about 200 miles on my Spec Stage 3 i installed, but if its speed dependent and sound speed doesnt increase by rpm's then it couldnt be the clutch. Plus I believe the sound was evident before clutch install if i remember correctly.