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In 1988, Porsche introduced the 944 Turbo S with a more powerful engine (designation number M44/52) rated at a maximum power output of 250 PS (184 kW) at 6,000 rpm and 350 N⋅m (258 lb⋅ft) of torque at 4,000 rpm (the engine in the standard 944 Turbo generated 223 PS (164 kW) and 243 lb⋅ft (329 N⋅m)). This higher output was achieved by using a larger KKK K26-8 turbocharger housing and revised engine mapping to maximize boost for longer.