Porsche 944 Turbo
For the 1986 model year Porsche introduced the 944 Turbo, known internally as the 951 (952 for right-hand drive models).
This had a turbocharged and intercooled version of the standard car's engine that produced 220 hp (164 kW) (217 hp (162 kW) in the US) at 6000 rpm. The turbo was the world's first car using a ceramic portliner to retain exhaust gas temperature. The Turbo also featured several other changes, such as improved aerodynamics, a strengthened gearbox with a different final drive ratio, standard external oil coolers for both the engine and transmission, standard 16 inch wheels (optional forged fuchs wheels), and a slightly stiffer suspension to handle the extra weight.
Major engine component revisions, more than thirty in all, were made to the 951 to compensate for increased internal loads and heat.
1987 Porsche 944 Turbo (US Model)
Few changes occurred for the 1987 model year. They included the deletion of the transmission oil cooler, a change in suspension control arms in order to reduce the car's scrub radius, and for the first time ever offered in a production car, standard dual airbags. The engine remained the same M44/51 powerplant as in the 1986 model. In 1988, Porsche introduced the Turbo S option package (SE in the UK). The 944 Turbo S had a more powerful engine (designation number M44/52) with 247 hp (184 kW) and 260 lb·ft (350 N·m) torque (standard 944 Turbo 217 hp (162 kW) and 243 lb·ft (329 N·m)). This higher output was achieved by using a larger #8 turbine housing and revised engine mapping which allowed for slightly more boost at high rpms as compared to the standard Turbo. In June 1988, Car and Driver tested the 944 Turbo S and achieved a 0-60 mph time of 5.5 seconds and a quarter mile time of 13.9 seconds at 101 mph (163 km/h). Top speed was factory rated at 162 mph (261 km/h.
Source: Wikipedia, 2011