FUEL GAUGE READINGS HELP!!!!! ... '11 Nismo

DBZnismo

So i know there are many threads behind the inaccuracy of the fuel gauge on z34s but i only keep finding threads from years ago. My point being is that i want to hear some more recent responses from the community.

OKAY THEN, so last night i was driving around with my buddies (my nismo had half a tank of gas) so we drive pretty fast when we're all cruising together, did a few outruns here and there. So we decide to head to my friends house so we caravan our way over there.
WE COME to this turn and everybody hits it pretty fast, when i go to hit this LEFT HAND TURN i pressed on the gas (all of the assists were turned off) and my throttle stops midway through the turn, my revs drop, but then responded back normally in a fraction of a second. I was clueless on what had just happened and i was 5 houses away from my buddy's pad so i parked the car there and didnt turn her back on untill about 4 hours later.
ONCE i fired up the engine, all of my fuel dots were off and then the YELLOW TRIANGLE LIGHT with the exclamation mark (!) appeared. Then the screen below the fuel gauge started reading LOW FUEL with XXmiles left. I rushed to the gas station and filled her up untill the pump stopped (by the amount of fuel i pumped i could tell my gas tank was still roughly around halfway prior to refuel) still continued with the traingle light and low fuel warning. This morning it was the samething, went on a drive for about 10 mins still no change. Fired her up once more before bed and it continues. The tank is obviously full, the traingle ! light continues to be there, NONE of my fuel dots light up and the Low Fuel warning continues to peep every time i start the engine.

WHAT IS THIS WITCHERY!?!! PLEASE HELP DONT WANT TO GO TO THE STEALERSHIP!

I drive a 2011 Nismo with 40k miles...

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Fairlady Z Nismo!!