The '90s Porsche 911 RSR Is the Best-Sounding 993

Individual throttle bodies, upgraded camshafts, and a lack of muffling bring the 993's flat-six to life.

In the 1990s, Porsche offered a factory racing version of its 993-generation 911 Carrera to customers, dubbed the Cup 3.8 RSR. According to RM Sotheby's, just 45 examples were built. If this video is anything to go by, it might be the best-sounding 993 of all.

The RSR flat-six engine makes around 350 horsepower thanks to things like upgraded camshafts, individual throttle bodies, and a lack of muffling or catalytic converters. The side effect is a great exhaust note.

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