Audi TSFI 4.2 intake manifold with runners. First used in the Audi Q7; and a sports-focussed high-revving version, with features borrowed from motorsport, for the B7 RS 4 quattro and the R8. This is the first eight-cylinder road car engine to use Fuel Stratified Injection (FSI), which was successfully developed by Audi in their Le Mans-winning R8 racing car. The 5.2 V10 FSI was developed directly from this V8 engine.
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