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The Mercedes-AMG GT lineup (GT, GT S, GT C, GT R) is one of the most sonically impressive platforms AMG has ever produced. The M178 4.0-litre twin-turbo V8’s hot-inside-V turbocharger layout and flat-plane-inspired firing order give it a distinctive character that sets it apart from the M177-powered sedans and SUVs. But the factory exhaust system — while tuned for a refined balance of performance and daily comfort — leaves significant gains on the table in both sound quality and outright power. This guide covers the full exhaust upgrade path for AMG GT M178 models, from downpipes to valved exhaust systems,...

The Ferrari 488 GTB and 488 Spider are among the most thrilling mid-engine supercars ever produced — and the F154 3.9-liter twin-turbo V8 at their heart is one of the most awarded engines in automotive history. Producing 661 HP from the factory, the 488 already delivers staggering performance. But the factory catalytic converters create significant backpressure directly downstream of each turbocharger, leaving measurable power on the table. Replacing them with aftermarket downpipes is the single most effective bolt-on modification you can make to the F154 platform.This guide covers everything you need to know about upgrading the downpipes on your Ferrari...

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...

The McLaren 720S runs the M840T 4.0-litre twin-turbo V8 — McLaren's most potent engine in the Super Series lineup. With 710 HP and 770 Nm from the factory, the M840T is already a powerhouse, but its twin-scroll turbochargers and Bosch Motronic MED 17.3.5 ECU leave substantial headroom for professional calibration. YPG Motorsport's bench tuning service unlocks up to 870 HP and 976 Nm at Stage 2, making the 720S one of the most rewarding exotics to tune in the GCC. McLaren 720S Engine Breakdown — M840T 4.0T V8 Spec Detail Engine Code M840T Displacement 3,994 cc (4.0L) Configuration 90° V8,...