At the 2008 North American International Auto Show (NAIAS) in Detroit, Audi released the first Audi "S" model of the TT range – the Audi TTS quattro,[35] with a heavily revised 2.0 TFSI engine.[35] The cylinder block, cylinder head and the fuel injectors have all been modified from the base 2.0 TFSI engine (ID: CDL). Together with other modifications, this engine produces a DIN-rated power output of 200 kW (272 PS; 268 hp),[35] and generates a torque of 350 N⋅m (258 lbf⋅ft) from 2,500 to 5,000 rpm.  It was available with a choice of either a six-speed close-ratio manual transmission,[35] or a six-speed 'S tronic' transmission.[35] In the United States, the S tronic gearbox was the only available transmission. Like all Audi "S" models, it was only available with four-wheel drive as standard.