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McLaren 720S Downpipe Guide — Catless Race Downpipes vs Sport Cats | M840T 4.0T V8 | Power Gains, Sound & Installation
The McLaren 720S is one of the most devastatingly fast supercars ever built — and its M840T 4.0-liter twin-turbo V8 is the reason. Producing 710 HP from the factory, the 720S already embarrasses cars costing three times as much. But the factory catalytic converters sitting directly downstream of each turbocharger create a massive restriction where exhaust gas velocity is highest. Replacing them with aftermarket downpipes is the single most effective bolt-on modification you can make to unlock the M840T's full potential.This guide covers everything you need to know about upgrading the downpipes on your McLaren 720S: catless race downpipes versus...