Originally Posted by ImportLabSRT
Im going to say its one of two things.... possibly the S/C clutch engaging (normal), or just phantom sound from the pressure differential in the NW CAI. From what you described I have the same sound... and if I remove my NW CAI, the sound goes away.
Great- thanks for the speedy repsonse! So you hear the same thing? That makes me happy to know I'm not crazy! It's one of those sounds it's so feint most won't pick up on it but it's most definitely there and most definitely RPM dependent. Have you noticed that?