Project BMW M3 Part 6: Cams, header and pulleys
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The entire Supersprint exhaust was a perfect fit and was good for an extra 12.7 hp at 6920 rpm and 25.3 lb-ft of torque at 2670 rpm. With this system Project M3 went from a peak 242.1 hp to 252.4 hp at 6830 rpm. The headers weighed in at 16.25-lb (versus 20.75 for stock). Altogether this exhaust system saved exactly 28 lb over stock. View Related Article
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