Here it is on my G37 the first clip is with a standard Y pipe and FI RHFC. The second clip is with Motordyne XYZ Y pipe non resonated, Motordyne M370 ( Yes it changes the way the exhaust sounds. ) and FI RHFC. Takeda Long tube intake on both.
https://www.youtube.com/watch?v=QjKtSrON_fQ
https://www.youtube.com/watch?v=W9n7KVIYbWk