Ford S-Max 2.0 STCI Stage 1 (203PS / Auto) - Reviews | MED17

With a deep focus on harmonizing everyday usability and spirited driving dynamics, this Stage 1 calibration for the 2010 Ford S-Max 2.0 STCI elevates performance across the entire rev range while maintaining factory reliability. The turbocharger boost strategy is reengineered to achieve a seamless build of pressure from as low as 1 800 RPM through the mid-range, virtually eliminating turbo lag and delivering a consistent surge of torque exactly when you demand it. Comprehensive revisions to fuel injection maps optimize atomization and combustion efficiency in all load and temperature conditions—this yields a linear powerband free of hesitation and flat spots, whether you’re navigating city streets or accelerating onto the highway.

Advanced torque and smoke limiters are carefully raised within OEM safety margins to unlock an additional 30–35 Nm of mid-range pull, enhancing overtaking performance and towing capability without compromising emissions compliance under normal driving. Secondary engine management systems are also refined: EGR flow parameters are recalibrated to minimize soot accumulation in the intake manifold, while DPF regeneration thresholds are extended to improve filter longevity without disabling emissions controls. Cold-start enrichment and idle stability maps are fine-tuned to ensure smooth startups and stable idling across diverse climates, preventing stalls at traffic lights and enabling confidence in stop-and-go traffic.

Transmission calibration for the automatic gearbox is tailored to the new torque curve, providing crisper, more precise shifts and reducing shift shock under increased load. Protective maps for knock and overboost remain intact, and all files undergo full checksum correction for seamless flashing via CMD Flash or any bench/OBD tool supporting Bosch MED17 ECUs. The result is a perfectly balanced upgrade that blends refined comfort and durability with a pronounced performance uplift—transforming your S-Max into a more responsive, capable, and engaging companion on every journey.