NV400 2.3 DCI SID310 Siemens/Continental 10351275AA |SW-RFZRFE429C000000| — ECU Tuning Stage 1  - Product specifications

This comprehensive Stage 1 calibration transforms the NV400’s 2.3 DCI powertrain into a more flexible and responsive workhorse without compromising its renowned durability. By reworking the turbocharger boost curve, spool-up is accelerated and maintained across a wider RPM band, eliminating low-end hesitation and delivering a flat, robust torque plateau ideally suited for heavy payloads and urban stop-start duties alike. Fuel injection quantity and timing maps have been retuned to ensure an optimal air–fuel ratio under all load conditions—smoothing transitions between partial and full throttle, reducing particulate emissions, and curbing soot formation for cleaner combustion. Rail-pressure management is optimized to maintain consistent spray patterns even under prolonged high-load operation, protecting injector longevity and reducing maintenance intervals. Adaptive EGR flow calibration supports efficient DPF regeneration at lower exhaust temperatures, minimizing downtime for filter cleaning and preventing clogging without triggering fault codes. Gearshift characteristics on the 6-speed manual gearbox are synchronized with the revamped torque curve, delivering crisper engagements and reducing driveline shock during heavy starts or steep climbs. Throttle-pedal mapping is smoothed to eliminate flat spots during rapid inputs, creating an intuitive connection between driver intent and engine output. All maps remain strictly within OEM safety margins, safeguarding turbocharger, transmission, and drivetrain components under continuous commercial use. Tested on a professional dynamometer and validated against factory specifications, this remap strikes a perfect balance between enhanced performance, fuel economy gains, and uncompromised reliability—ideal for fleet operators, tradespeople, and anyone demanding more from their NV400 every working day.