F3x - 2011 - 2015
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Order This File Ask a QuestionThe BMW 3 Series M3 Competition 450hp (F3x - 2011 - 2015) produces 450bhp and 550Nm in standard form. Our Stage 1 ECU tuning file raises output to 500bhp and 680Nm, a gain of 50bhp and 130Nm, with no hardware modifications required. The file is delivered through the ByteFlash Portal and is ready to write to the vehicle.