3.9 V6 245hp Stage 1 tuning

The Chevrolet Impala 3.9 V6 245hp produces 245 hp and 240 Nm as standard. The YASTUNING Stage 1 remap file takes it to 265 hp and 265 Nm, a gain of +20 hp and +25 Nm. Engine code LZ9. ECU: Delco E38. The file is checksum-corrected and reviewed by an experienced calibrator within factory component tolerances.