A more powerful version of the Turbo called the Turbo S (S standing for Sport) was unveiled at the Geneva Motor Show in March 2010. Available only with the 7-speed PDK transmission and carbon ceramic brakes along with the Sport Chrono package as standard, the engine in the Turbo S was tuned to generate an extra power output of more than the standard Turbo, bringing the total to at 6,000 rpm and of torque. The engine had revised intake valve timing and a new carbon fibre airbox installed to achieve this feat. European deliveries were scheduled for May 2010 with production ending in early 2013. The Turbo S was Porsche's fastest production car to date at the time of its introduction alongside the GT2 RS, having a acceleration time of 3.3 seconds and acceleration time of 10.8 seconds while ultimately reaching a maximum speed of . Maximum torque of was available between 2,100 rpm and 4,250 rpm. The 911 Turbo S, by contrast to the regular Turbo, was configured to operate with a higher boost pressure level, which means that their maximum torque of was available for an unlimited period.