The Fabspeed Sport Catalytic Converters for 570S / 570GT / 540C replace the restrictive factory catalysts with high-flow, race-inspired units — transforming the exhaust path into a freer-breathing layout that sharpens throttle response, boosts turbo efficiency, and delivers a richer, more exotic supercar exhaust note. Engineered to balance performance and drivability, these “sport cats” provide near-straight-pipe flow while retaining catalytic scrubbing — allowing for strong performance gains without sacrificing ECU harmony. They’re ideal for owners who want more sound, speed, and responsiveness from their twin-turbo McLaren.
Designed as a direct replacement for stock catalytic converter assembly — mounts using factory exhaust plumbing and mounting points.
Pair of high-flow catalytic converter units with HJS 200 cell German high-performance HD catalytic cores.
TIG-welded stainless-steel inlet and outlet pipes (investment-cast) designed for smooth gas flow and minimal turbulence.
High-temperature heat blankets (rated to 1800 °F) covering the catalytic bodies — to preserve exhaust velocity and manage under-hood heat.
Catalyst Core: High-flow 200-cell HJS HD catalytic converters — flows ~ 90–93% of a straight-pipe equivalent while retaining emissions-scrubbing capability.
Piping: Stainless-steel cast-inlet and outlet 4.5" (oversized for optimal flow) to maximize exhaust velocity and minimize back-pressure.
Thermal Management: Included ceramic-fiber heat wraps with stainless mesh liner and high-temp fasteners — helps keep exhaust gases hot for better flow and protects nearby components.
Emissions / ECU Compatibility: Designed to retain oxygen-sensor bung placement for proper feedback; optimized to avoid catalyst-related error codes under normal operating conditions.
High-Flow Catalysts for Max Performance & Sound — HJS 200-cell cats flow almost like a straight pipe while still functioning as a catalytic converter — delivering a deep, aggressive exhaust character with less back-pressure.
Improved Turbo Spool & Throttle Response — Reduced restriction after the turbochargers lets exhaust gases evacuate more freely, aiding faster turbo response and more immediate power delivery.
Upgraded Build Quality — Investment-cast stainless inlet/outlet with HJS cores ensure durability, thermal stability, and longevity even under aggressive use.
Thermal Protection & Efficiency — High-temp blankets keep exhaust heat contained, maintaining gas velocity and protecting surrounding components from heat soak.
Plug-In OEM-Compatible Fitment — Designed to bolt directly into stock exhaust layout — no cutting or fabrication required — ideal for straightforward installation.
Balanced Performance vs Emissions — Offers a strong performance boost and supercar sound while keeping catalytic filtration in place — a practical choice for owners who care about residual emissions functionality and ECU compatibility.
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