The Chevrolet Impala 3.4 V6 180hp (2000 - 2005) produces 180bhp and 278Nm in standard form. Our Stage 1 ECU tuning file raises output to 200bhp and 308Nm, a gain of 20bhp and 30Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.