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Porsche 992 Turbo Performance Exhaust Systems Add Catalytic Converters?:Competition - No Catalytic Converters Corvette ZR1 Style Rocker PanelDEVELOPMENT GOALS Build a non valved system based around a single flow path with large diameter tubing to yield maximum power and sound gains. Heighten aggressiveness while maintaining an overall sound level potential quality that can still be reasonably driven on the street through our signature drone fighting capabilities. Maintain a smooth tone with refined character befitting of a Porsche while still offering maximum flow. RESEARCH & DEVELOPMENT