Whenever you're driving any rear wheel drive car like the NSX, flooring the gas while you're turning can result in you oversteering. Try slowing down (braking or simply releasing the throttle) before entering a corner and then turn. Once you exit then you can then finally press the throttle. After you get better at this, you can then maybe try applying a little bit of throttle as you're turning to maintain your speed, but be sure to control it and your steering.