Porshe Carrera 911-flavored twist on the ultimate neunelf will feed some 530 hp and 516 lb-ft of torque to all four wheels from its twin-turbocharged 3.8-liter flat six. The regular, and now useless, non-S 911 Turbo makes do with an inadequate 500 hp and 480 lb-ft from the same engine, although it can match the 516 pounding feet of the Turbo S via an overboost function. The creation of the S involved revising the engine software to pump up the maximum boost from 11.6 psi to 14.5, which just so happens to be the figure made during the Turbo’s overboost function. No engine internals were changed. Fuel economy is rated at 17 mpg city and 24 mpg highway.