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The stock high-pressure fuel pump on the Mercedes-AMG M177 4.0L V8 BiTurbo is the first component to hit its limit when you push beyond factory power. Whether you're running a Stage 2 ECU calibration, upgraded turbos, or ethanol-blended fuels, the OEM HPFP cannot deliver enough volume to maintain stable rail pressure — and that means lost power, misfires, or worse. This guide covers everything you need to know about upgrading the HPFP on the M177 platform: what the stock system's limits are, how 250bar and 350bar kits compare, which models fit, and what supporting modifications you need. Why the Stock...

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...

Complete Mercedes-AMG M177 turbo upgrade guide covering Stage 3 and Stage 4 builds for the C63 S, E63 S, GLC63, and GT63. Turbo options, power targets, supporting mods, and costs from YPG Motorsport.

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...

The Mercedes-AMG M177 is the workhorse of AMG's modern lineup — a 3,982 cc twin-turbo V8 with the now-legendary hot-inside-V turbo layout. It powers the C63 AMG (W205), E63 AMG (W213), AMG GT 63, GLC63, GLE63, and more. At YPG Motorsport, we build complete M177 crate engines with forged internals, race-spec tolerances, and the hardware to support 1,500 HP+ with upgraded turbochargers. What Is an M177 Crate Engine? A crate engine — also known as a long block — is a fully assembled engine ready to install. Our M177 crate engines include the complete rotating assembly (forged crankshaft, forged H-beam...