The Subaru Forester 2.0 D boxer 148hp (2018 - 2020) produces 148bhp and 350Nm in standard form. Our Stage 1 ECU tuning file raises output to 177bhp and 410Nm, a gain of 29bhp and 60Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.