E85 - 2003 - 2008
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Order This File Ask a QuestionThe BMW Z4 2.5si 218hp (E85 - 2003 - 2008) produces 218bhp and 250Nm in standard form. Our Stage 1 ECU tuning file raises output to 235bhp and 270Nm, a gain of 17bhp and 20Nm, with no hardware modifications required. The file is delivered through the ByteFlash Portal and is ready to write to the vehicle.