Originally Posted by JARblue

Nope. It almost sounds like the damn throwout bearing (which is brand new)

It happens around 2.5K RPMs. Can be engine braking in gear. Can be stopped in neutral and give it the right amount of throttle to make the noise. It happens briefly during gear shifts, too. Would be annoying except for racecar! Plus during the gear shifts it kinda sounds like a blowoff valve for my poser turbo