X166 - 2012 ->
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Order This File Ask a QuestionThe Mercedes GL 450 367hp (X166 - 2012 ->) produces 367bhp and 500Nm in standard form. Our Stage 1 ECU tuning file raises output to 510bhp and 820Nm, a gain of 143bhp and 320Nm, with no hardware modifications required. The file is delivered through the ByteFlash Portal and is ready to write to the vehicle.