Porsche 993s with 3.6-liter engines made 272 HP until 1996, when Porsche’s Vario-Ram became a standard offering. Vario-Ram adjusted the length of the air intake ducts according to engine RPMs and the car’s speed. This feature bumped the power up to 285 HP and produced a flatter torque curve. The twin-turbo 3.6-liter engines produced 408 horsepower, with the Turbo S and GT2 993 variants producing an even more powerful 430 and 450 HP, respectively.
To the model year 1997, Porsche released the 993 Carrera S. At that time, rather launched as a 'savings model', is the often as '2S' dubbed Carrera S today the most sought variant. The Carrera S obtained, because it significantly differed from the mature concept of the turbo looks, consequently its own M-Code 495 = Carrera S.