The Mercedes Citan 109 CDI 95hp (2019 - 2020) produces 95bhp and 230Nm in standard form. Our Stage 1 ECU tuning file raises output to 120bhp and 270Nm, a gain of 25bhp and 40Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.