2008 - 2014
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Order This File Ask a QuestionThe Chevrolet Express 6.6 V8 250hp (2008 - 2014) produces 250bhp and 624Nm in standard form. Our Stage 1 ECU tuning file raises output to 280bhp and 660Nm, a gain of 30bhp and 36Nm, with no hardware modifications required. The file is delivered through the ByteFlash Portal and is ready to write to the vehicle.