Give it time, Econ, you'll notice it soon. Best opportunity for this delay to happen is in stop/go traffic in the middle of August (at least that's been my experience).
NOTE: That's 2 more people without NISMOs that have joined the gas pedal delay convo. I'm geting more and more convinced. My plan is to trade up for the NISMO at a Nissan dealer. If they happen to notice the issue with the car then I'll ask them to fix it themselves under warranty.
I love a good can of worms.