F3x LCI - 06 / 2015 - 2019
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Order This File Ask a QuestionThe BMW 3 Series 340i 326hp (F3x LCI - 06 / 2015 - 2019) produces 326bhp and 450Nm in standard form. Our Stage 1 ECU tuning file raises output to 400bhp and 585Nm, a gain of 74bhp and 135Nm, with no hardware modifications required. The file is delivered through the ByteFlash Portal and is ready to write to the vehicle.