2019 ->
Ready to order this tuning file? Access the ByteFlash Portal to place your order.
Order This File Ask a QuestionThe Mercedes GLS 450 (3.0T) 367hp (2019 ->) produces 367bhp and 500Nm in standard form. Our Stage 1 ECU tuning file raises output to 420bhp and 590Nm, a gain of 53bhp and 90Nm, with no hardware modifications required. The file is delivered through the ByteFlash Portal and is ready to write to the vehicle.