In 1988 , Porsche introduced the 944 Turbo S ( internal code name 952 ) with a more powerful engine ( designation number M44/52 ) rated at a maximum power output of at 6,000 rpm and of torque at 4,000 rpm ( the engine in the standard 944 Turbo generated and ) .
The internal code name of the Porsche 944 was 952 .