Sound is the most defining characteristic of this car. In the era of turbocharging, everything else is too quiet. Quiet is not a problem in the Performante. In track-ready Corsa mode (one of three settings), the exhaust drowns out everything, even your internal monologue. And it's not just loud, it sounds like an honest-to-god racecar. Making a V10 sound not just decent, but back-of-the-neck-hair thrilling, would have been enough.
Lamborghini rolled out the Performante title to define all-encompassing performance. So the all-wheel-drive system stays, the engine gets tweaked, some weight goes out, and Aerodinamica Lamborghini Attiva (ALA, or Lamborghini Active Aerodynamics) comes in. Fun fact: Ala means "wing" in Italian. The engine gets a new intake and exhaust, plus titanium intake valves that allow more lift. The improved breathing is good for 630 horsepower, 28 more than before, with 443 pound-feet of torque. And to tie it all together, the integrated chassis control system (Lamborghini calls it ANIMA) was recalibrated.
The Huracán, prior to the Performante, was not an ideal modern supercar. At least not to this writer. It does all the right things but with less character than you'd expect from an Italian wedge-car. And it always has understeer at the ready. The Performante, however, is an entirely different Huracán.
First off, ALA works. You can feel it in the way the car jukes right and left until you realize you can put in less steering. But also because the understeer is gone in the Huracán. It's tenacious with its grip, but also balanced. Much of this is also due, no doubt, to the tires. But the higher limits of the Performante also come with more engagement at every speed. They took the Huracán and added back the character it needed all along.
Huracán Performante is a special car. It's easily the best car Lamborghini has ever made, and it also happens to be the fastest. Plenty of cars are fast. The Huracán Performante is faster, and has more character.