F36 - May/2016 ->
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Order This File Ask a QuestionThe BMW 4 Series GC 435i 306hp (F36 - May/2016 ->) produces 306bhp and 400Nm in standard form. Our Stage 1 ECU tuning file raises output to 370bhp and 520Nm, a gain of 64bhp and 120Nm, with no hardware modifications required. The file is delivered through the ByteFlash Portal and is ready to write to the vehicle.