I don't know if this helps but the Vehicle Dynamic control make lots of funky noises and my new 2013 Nismo makes clinking noises while shifting into first and various times. The dealer contacted the regional rep and he verified this IS normal. Here is the link to the 2012 370Z manual:
http://www.nissan-techinfo.com/refgh...issan-370Z.pdf Look at page 5-28. I hope this helps.