Naturally Aspirated RSS

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 Lamborghini Revuelto is the most powerful Lamborghini ever built — and it carries the last naturally aspirated V12 Lamborghini will ever produce. The 6.5-liter V12 is paired with three electric motors in a plug-in hybrid powertrain producing a combined 1,001 HP. But even with electric assistance, the V12's exhaust system remains the soul of this car — and the factory catalytic converters restrict a significant amount of the engine's natural voice and measurable power. Upgrading the downpipes is the single most impactful exhaust modification you can make to the Revuelto platform.This guide covers everything you need to know about...

The Lamborghini Aventador is one of the most iconic supercars ever produced — and its naturally aspirated 6.5-liter V12 is the last of its kind. From the LP700-4 to the LP750-4 SV and the ultimate SVJ, the Aventador's V12 produces a sound and driving experience that no turbocharged engine can replicate. But the factory catalytic converters rob this legendary engine of its full voice and measurable power. Replacing them with catless downpipes is the single most effective exhaust modification you can make to the Aventador platform.This guide covers everything you need to know about upgrading the downpipes on your Lamborghini...

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...

If you are shopping for an AMG engine build, you have probably seen three terms: short block, long block, and crate engine. They describe different levels of engine assembly — and choosing the right one depends on the condition of your current engine, your budget, and your power goals. This guide breaks down exactly what each one includes, when to choose it, and how they compare. Quick Comparison Build Level What's Included You Supply Best For Short Block Block, crankshaft, connecting rods, pistons, bearings, internal seals Cylinder heads, intake, exhaust, turbos, accessories, wiring Healthy heads, bottom end needs rebuild Long...