The Mercedes CLK 200 K 163hp (W208 - 1997 - 2002) produces 163bhp and 230Nm in standard form. Our Stage 1 ECU tuning file raises output to 175bhp and 245Nm, a gain of 12bhp and 15Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.