My 2013 Infiniti G37 Journey 7AT sedan (bone stock besides coils+wheels) makes some very interesting sounds when shifting at high RPMs.

A 370Z flew by me on the road, and of course being the type of driver that I am, I sped up and egged him into a race (in Mexico). After the race, the 370Z asked me about my car and whatnot. I just told him I was just a stock '13 G37 with ~300 horses. He was like, "No way. I think I heard some boost under that hood." I've also noticed this sound as well, but because I had no idea what it was, I just responded to the 370Z driver with "I think it's the intake."

Immediately after a high-RPM shift, you hear a whistling sound, similar to a BOV. I know my car isn't turbo'd and I'm also curious where this sound is coming from. Anyone know?

 

It's the flux capacitor kicking in.

Also, read this and never post anything like this again:
MyG37 - Announcements in Forum : Announcements
Thanks.