The Renault Vel Satis 2.0 DCi 175hp (All) produces 175bhp and 380Nm in standard form. Our Stage 1 ECU tuning file raises output to 205bhp and 450Nm, a gain of 30bhp and 70Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.