The Isuzu D-Max 2.5 TDI 136hp (2003 - 2012) produces 136bhp and 280Nm in standard form. Our Stage 1 ECU tuning file raises output to 175bhp and 350Nm, a gain of 39bhp and 70Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.