3.9 V6 243hp Stage 1 tuning

The Chevrolet Uplander 3.9 V6 243hp produces 243 hp and 325 Nm as standard. The YASTUNING Stage 1 remap file takes it to 265 hp and 360 Nm, a gain of +22 hp and +35 Nm. Engine code LZ9. The file is checksum-corrected and reviewed by an experienced calibrator within factory component tolerances.