My car still has a valve tap like crazy. Took the car to the dealer and listened to another 2010 Z with the parts and service manger, and it sounded somewhat similar, but my engine def sounded louder and more tappy. He is having a field service engineer come out on monday or tuesday to listen to it. So help me god if he tells me it sounds normal. I'm gonna try and record it see if anybody else has similar sounds.