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Porsche 911 Turbo S 992 Downpipe Guide — Catless vs 200-Cell, Power Gains, Sound & Fitment (2026)
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,...