400-Cell Downpipes RSS

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 M157 5.5-liter twin-turbo V8 is one of Mercedes-AMG's most iconic powertrains — a hand-built engine that powered the previous-generation E63, ML63, and G63 from 2012 through 2018. With factory outputs ranging from 550 HP to 585 HP, the M157 was already formidable from the factory. But the factory catalytic converters create a massive restriction downstream of the turbochargers that limits both power delivery and turbo efficiency.This guide covers everything you need to know about upgrading downpipes on your M157-powered Mercedes: catless versus high-flow catted options, real-world power gains, exhaust sound changes, fitment across all M157 models, and why an...

The Mercedes-AMG 45-series — A45, CLA45, and GLA45 — packs a remarkable amount of performance into a compact package. The M133 2.0-liter turbocharged inline-4 was the most powerful series-production four-cylinder engine in the world when it launched, and it remains one of the most tunable platforms in the AMG lineup. A single downpipe replacement is the highest-impact bolt-on modification you can make to this engine.This guide covers everything you need to know about upgrading the downpipe on your M133-powered AMG: catless versus high-flow catted options, real-world power gains, exhaust sound transformation, fitment across all 45-series models, and why an ECU...

The M276 3.0-liter BiTurbo V6 is the engine behind some of Mercedes-AMG's most popular performance sedans, coupes, and SUVs — including the C43, E43, GLC43, and C450 AMG. While overshadowed by its V8 siblings, the M276 responds exceptionally well to bolt-on modifications. Downpipes are the single most effective hardware upgrade you can make to this platform.This guide covers everything you need to know about upgrading the downpipes on your M276-powered Mercedes: catless versus high-flow catted options, real-world power gains at each stage, exhaust sound changes, fitment across all M276 models, and why an ECU calibration is essential to unlock the...

The S55 twin-turbo inline-six responds to downpipes harder than almost any other mod you can bolt on. On the BMW M3 F80 and M4 F82, the factory catalytic converters sit immediately downstream of the twin-scroll turbochargers — creating a restriction right where exhaust gas velocity peaks. Replace them with aftermarket downpipes, pair with a Stage 2 ECU calibration, and you're looking at 500+ WHP from a 3.0-liter six-cylinder. This guide covers everything you need to know before buying downpipes for your F80 M3 or F82/F83 M4: catless versus 200-cell versus 400-cell GESI high-flow cats, real-world dyno numbers, exhaust sound changes,...