The dealer has yet to find out the issue, they dismissed it as normal, then when i talked to the service manager, he scheduled a check with the local nissan rep, he rode shotgun today to verify the sound and has no idea... sight... these people wont do anything unless you push them along or your car basically falls apart.
he will notify me next week with findings, If he dismisses it as normal I will have to go with another 370z owning friend to show them that the sound is not normal or characteristic,.. I have a feeling this will be the case...