The BMW 3 Series 316i 115hp (E46 - 1998 - 2005) produces 115bhp and 175Nm in standard form. Our Stage 1 ECU tuning file raises output to 126bhp and 192Nm, a gain of 11bhp and 17Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.