The Mercedes CLK 230 K 193hp (W208 - 1997 - 2002) produces 193bhp and 280Nm in standard form. Our Stage 1 ECU tuning file raises output to 204bhp and 295Nm, a gain of 11bhp and 15Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.