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Order This File Ask a QuestionThe Audi TT RS 2.5 TFSI RS 400hp (All) produces 400bhp and 480Nm in standard form. Our Stage 1 ECU tuning file raises output to 470bhp and 625Nm, a gain of 70bhp and 145Nm, with no hardware modifications required. The file is delivered through the ByteFlash Portal and is ready to write to the vehicle.