Developed for the 2012 Porsche 911 Carrera S (997.2) with the 3.8L DFI engine, this Stage 2 ECU file pushes performance through optimized throttle, ignition and load strategies. Based on the Siemens SDI3 ECU and software WS1F80C838SUM04, it supports enhanced air/fuel ratios and high-RPM delivery, while maintaining drivability and engine safety margins. Suitable for vehicles with aftermarket headers, sport cats or full exhaust systems.