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Lamborghini Aventador Race Pipe Guide — V12 Sport Cats vs Cat-Delete, Sound & Gains
The Lamborghini Aventador is a different beast. Powered by the L539 6.5-litre naturally aspirated V12, the Aventador has no turbochargers — which means no traditional downpipes. But the exhaust modification principle is identical: the factory catalytic converters are the single biggest flow restriction in the exhaust system, and replacing them with high-flow sport cats or catless race pipes is the most impactful bolt-on exhaust modification for the V12. This guide covers the Aventador’s exhaust catalyst section — what many enthusiasts refer to as “race pipes” or “cat-delete pipes.” The Aventador Exhaust System The Aventador’s exhaust system routes V12 exhaust from...
McLaren 720S Downpipe Guide — M840T Catted vs Catless, 800 HP Stage 2 & Sound
The McLaren 720S is powered by the M840T — a 4.0-litre twin-turbo flat-plane-crank V8 that produces 710 HP from the factory. It is one of the most technologically advanced engines in any production car, and it has significant untapped performance potential. The factory catalytic converters, positioned downstream of each turbocharger, are the single biggest restriction in the exhaust system. Replacing them with performance downpipes is the foundation of serious 720S power builds. The M840T Exhaust Architecture McLaren’s M840T is a bespoke unit — not shared with any other manufacturer. The flat-plane crankshaft delivers an even firing order that naturally produces...
AMG GT Downpipe Guide — M178 4.0TT Catted vs Catless, HP Gains & What to Know
The Mercedes-AMG GT is a front-mid-engine grand tourer built around the M178 4.0-litre twin-turbo V8 — a hand-assembled unit that shares its displacement and hot-vee architecture with the C63’s M177 but differs significantly in its dry-sump lubrication, engine mounts, exhaust routing, and ECU calibration. The AMG GT’s factory exhaust system is designed with emissions compliance and NVH refinement as priorities, and the catalytic converters sitting directly downstream of each turbocharger are the primary flow restriction in the system. The Factory Exhaust Restriction In the AMG GT, both turbochargers sit inside the cylinder bank vee, feeding exhaust through tightly packaged catalytic...