Haha exactly...button is way too hidden.
It was in the 265 I rented, should be in all of them...to the far right of steering wheel past where ignition barrel would normally be. Hold down for 5 seconds and off goes ESC, idle raises to 1300rpm, throttle becomes sensitive as if the flywheel has been instantly lightened, you get a more aggressive tune for more power/torque, electric steering becomes heavier and tighter. Real jerky around low speed movements but it's a whole different car when giving it stick - actually impressed me cause with sport mode off I thought it was way too docile and didn't see the fuss.