Some of us have been complaining about this since day 1. A few owners sold the 370Z because of it.
Gas Pedal Delay
Loss in acceleration + throttle response ??
It is possible to modify the throttle tables to improve response. In fact, turning off ETC in the ECU does wonders for throttle response, but you lose all the safety features.
Smooth Throttle for UpRev
It's a strange feeling as if the ECU is holding back power because 1st gear starts are a bit rough at times when there is a noticeable transition from 1-3k RPM. There are times it really holds back power. With the foot on the ground, it feels like I'm in the wrong gear. Even the turbos take longer to spool up. It feels like it is aggressively cutting power or opening the throttle sooner.