Looking to unlock the hidden performance in your Mercedes-Benz S400? This 2014 model received a VAITRIX Stage 2 ECU Tune, delivering a remarkable increase in horsepower and torque while maintaining the smooth, refined driving experience Mercedes-Benz is known for. Dyno Results Stock Output 333 HP 48.9 kgm Torque VAITRIX Stage 2 404.4 HP 66.0 kgm Torque Performance Gains ✅ +71.4 HP✅ +17.1 kgm Torque What Does the Stage 2 Tune Improve? The VAITRIX Stage 2 calibration signific