Audi Sport quattro S1, 1985

Audi Sport quattro S1, 1985The Audi Sport Quattro S1 was introduced at the end of 1984 as an update to the Audi Sport Quattro. The car featured a inline 5-cylinder engine that displaced 2,110 cc (128.8 cu in) and produced an officialy quoted figure of 350 kW (480 PS/470 bhp). However, the turbocharger utilised a recirculating air system, with the aim of keeping the turbo spinning at high speed,