Help me diagnose this problem: I can't rev past 3500 RPM intermittently (AK370Z)

/Angelo350Z/

This happened to me once, within a month or two or purchasing the Z. It was so random I really didn't know what was going on. I was at a light, slowly turned left when the light turned green, then it happened. I tried to accelerate quickly but the engine just wouldn't rev. Luckily the speed limit in Guam is 35 (yes, 35) so I was still moving with the flow of traffic. I drove the car to my destination, about 10 miles away, then parked it. A half hour later, I started it up and it seemed like it never even happened. It wasn't particularly hot that day, just the normal/average temperature for the island. It didn't happen for another 6 months. I'll get the CPS checked on my next oil change.

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2013 MB NISSAN 370Z SPORT