If you want to squeeze a bit more power from the Porsche 911 Turbo S, MANHART TR 800 is the answer. The turbocharged 3.8L six-cylinder boxer engine received an upgraded turbine kit with intercooler, along with a remapped MANHART ECU to generate 822 hp and 712 lb-ft of torque, mated to an eight-speed dual-clutch automatic transmission.