Citroën DS3 Racing 1.6 THP ECU Tuning File – Bosch MED17.4.2 / SW 531010 / 6M Petrol Performance 531010 Stage 2 

• Stage 2 file for DS3 Racing 1.6 THP (MED17.4.2)
• Fuel and ignition tables enhanced
• Torque caps lifted and high-RPM enrichment adjusted
• CS: N/A​

• Designed for vehicles with bolt-on upgrades (exhaust, intake, intercooler)
• Enhanced response and pull above 3,000 RPM
• Stock emission hardware compatibility maintained unless removed by user​