The Chevrolet Impala 3.8 V6 200hp (2000 - 2005) produces 200bhp and 305Nm in standard form. Our Stage 1 ECU tuning file raises output to 220bhp and 330Nm, a gain of 20bhp and 25Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.