The Volvo XC70 T6 Polestar 329hp (2012 ->) produces 329bhp and 480Nm in standard form. Our Stage 1 ECU tuning file raises output to 340bhp and 500Nm, a gain of 11bhp and 20Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.