F36 - May/2016 ->
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Order This File Ask a QuestionThe BMW 4 Series GC 440i 326hp (F36 - May/2016 ->) produces 326bhp and 450Nm in standard form. Our Stage 1 ECU tuning file raises output to 380bhp and 560Nm, a gain of 54bhp and 110Nm, with no hardware modifications required. The file is delivered through the ByteFlash Portal and is ready to write to the vehicle.