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Understanding the BMW S58 Engine The BMW S58 is the high-performance twin-turbocharged inline-six that powers the G87 M2, G80 M3, and G82 M4. Producing between 473 and 503 horsepower in factory form, the S58 is one of BMW M's finest achievements — a direct evolution of the acclaimed B58 platform, engineered with forged internals, a closed-deck block, and a sophisticated twin-turbo arrangement. For tuners, the S58 is a goldmine. But before you flash a Stage 1 or Stage 2 map, you need to address several known weak points. Tuning amplifies everything — both the strengths and the vulnerabilities. 1. Charge...

What Is CAMTRONIC and How Does It Work on the M177? Every M177-powered AMG — the C63, E63, AMG GT, GT 63, and GLC 63 — uses a cylinder-deactivation system Mercedes-Benz calls CAMTRONIC. Under light loads, four of the engine’s eight cylinders shut down to cut fuel consumption. The moment you press the throttle, all eight fire again in milliseconds. For tuners, CAMTRONIC matters because it directly affects camshaft behaviour, ECU calibration tables, and exhaust-gas temperature management. Whether you are running a Stage 1 ECU flash or building a 900 HP monster, you need to understand what this system does...