On fresh start, the cars quiet.
https://youtube.com/shorts/6BDrFA2eKh4

Once the car's warm, I can hear a ticking sound.
https://youtube.com/shorts/sWUo_OZx0eg

I put a screwdriver to the fuel damper and it's not vibrating so I don't believe it's related to Infinity ITB06012.

Any help on this is greatly appreciated.

I'm locate in South Florida so if there's anywhere that specializes in G35's, I could also take it there.

 

Sounds like a lifter, but you should check to make sure your spark plugs are all tight just to rule that out.

 

I was able to hear the same found when I pressed a screwdriver against my fuel damper. I'm going to swap it out and report back.