The Mercedes A 35 AMG 306hp (W177 - 2018 ->) produces 306bhp and 400Nm in standard form. Our Stage 1 ECU tuning file raises output to 330bhp and 490Nm, a gain of 24bhp and 90Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.