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A blow-off valve (BOV) is one of the most straightforward upgrades available for any turbocharged Mercedes-AMG. When you lift off the throttle under boost, the compressed air in the intake piping has nowhere to go — it slams back into the compressor wheel, creating compressor surge. The factory bypass valve recirculates this air back into the intake tract to manage surge, but on tuned or turbo-upgraded cars running higher boost pressures, the factory valve can struggle to vent quickly enough. An upgraded blow-off valve opens faster, vents more volume, and provides a clean release under higher boost levels — protecting...

The Mercedes-AMG M156 6.2-litre naturally aspirated V8 is the engine that defined AMG’s modern era — powering the C63 (W204), E63 (W211/W212), CLK63, SL63, ML63, and the legendary SLS AMG. Unlike AMG’s current twin-turbo engines, the M156 relies entirely on displacement, high-revving capability, and airflow to make power. That makes exhaust modifications — particularly headers — one of the most effective ways to unlock additional performance from this engine. This guide covers the exhaust upgrade path for M156-equipped models, including long-tube headers, downpipes, and how these modifications pair with other performance upgrades. Why Headers Matter More on the M156 On...

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 Mercedes-AMG M133 2.0-litre turbocharged four-cylinder is the engine behind AMG’s compact performance lineup — the A45 (W176), CLA45 (C117), and GLA45 (X156). From the factory, the M133 produces up to 381 HP in its final specification, making it one of the most powerful production 2.0T engines ever built. But with the right turbo upgrade, the M133 is capable of significantly more — well beyond 500 WHP on pump fuel. This guide covers the turbo upgrade path for all M133-equipped models, including the Stage 4 turbo kit and the supporting modifications needed to extract its full potential. Factory M133 Turbo...

The Mercedes-AMG M178 4.0-litre twin-turbo V8 is the dry-sump variant of AMG’s 4.0T engine family, engineered specifically for the AMG GT lineup — the GT, GT S, GT C, and GT R (C190/R190). With a flat-plane-inspired firing order, lower centre of gravity, and dedicated oil system designed for sustained lateral loads, the M178 is built for track work from the factory. Stock power ranges from 469 HP in the base GT to 577 HP in the GT R, but the engine’s forged crankshaft and robust bottom end support significantly more with the right turbo hardware. This guide covers the complete...