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Why Downpipes Are the #1 Hardware Upgrade for the Aston Martin DBX & DBX707 If you own an Aston Martin DBX or DBX707 and want more power, downpipes should be at the top of your list. The Mercedes-AMG M177 4.0-litre twin-turbo V8 under the bonnet is a proven powerhouse — but the factory exhaust system leaves serious performance on the table. Restrictive OEM catalytic converters choke exhaust flow right where it matters most: at the turbo outlets. Upgrading your downpipes is the single most effective bolt-on hardware modification you can make, and when paired with a Stage 2 ECU tune,...

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 BMW XM is BMW M's first dedicated standalone vehicle — a statement-making performance SUV powered by the S68 4.4-liter twin-turbo V8. Whether you own the base XM (644 HP combined) or the XM Label Red (738 HP combined), upgrading the factory downpipes is the most impactful bolt-on modification to unleash the S68's full potential.This guide covers catless and 200-cell downpipe options, power gains, exhaust sound, and why an ECU calibration is required after installation.The S68 4.4T V8 — Platform OverviewThe S68 is BMW's latest-generation 4.4-liter twin-turbocharged V8, featuring a hot-V configuration with 48V mild-hybrid assist. In the XM, it's...

The Aston Martin DB12 is the world’s first super tourer — and under its sculpted bonnet sits the Mercedes-AMG M177 4.0-liter twin-turbo V8, producing 671 HP and 590 lb-ft from the factory. While Aston Martin calibrated the DB12 for grand touring refinement, the M177 platform has proven headroom well beyond factory output. Upgrading the factory downpipes is the most effective bolt-on modification to unlock that potential. This guide covers catless and 200-cell high-flow catted options, real-world power gains, exhaust sound changes, and why an ECU calibration is essential after installation. The M177 in the DB12 — Platform Overview The DB12...

The Mercedes-AMG GLC63 and GLC63 S are the most powerful compact SUVs in the Mercedes lineup — packing the same M177 4.0-liter twin-turbo V8 found in the C63 S into a practical, daily-drivable SUV platform. Whether you use yours for school runs or track days, upgrading the factory downpipes is the single most effective bolt-on modification to unlock the M177's true potential in the GLC chassis.This guide covers everything you need to know about upgrading the downpipes on your GLC63: catless versus 200-cell high-flow catted options, real-world power gains at each stage, exhaust sound changes, fitment across SUV and Coupé...