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Porsche 992 Turbo S — The 9A2 EVO PlatformThe Porsche 992 Turbo S is powered by the 9A2 EVO (MA1.xx) — a 4.0-litre twin-turbo flat-six that produces 640 HP and 590 lb-ft of torque from the factory. It is one of the most capable forced-induction engines in any production sports car, with a power-to-displacement ratio that puts it among the most energy-dense road-car engines ever built.The 9A2's engineering margin is substantial. Porsche builds this engine for the kind of sustained abuse that 911 Turbos have always been subjected to — which means there's significant headroom above stock calibration that an...

Why Upgrade Downpipes on a Porsche 992 Turbo S?The Porsche 992 Turbo S produces 640 HP from its 3.8L twin-turbo flat-six — one of the most potent engines in the sports car world. Factory downpipes include two catalytic converters that create exhaust restriction and mute the flat-six’s natural character. Upgrading to high-flow downpipes reduces turbo back-pressure, increases peak power, and transforms the exhaust note from refined to raw.Catless vs 200-Cell Comparison Type HP Gain (with Stage 2) Torque Gain Emissions Sound Best For Catless (race) +80–130 WHP +80–120 lb-ft Off-road / track only Raw flat-six scream, turbo whistle Track monsters,...