5.3 V8 290hp Stage 1 tuning

The GMC Envoy 5.3 V8 290hp produces 290 hp and 441 Nm as standard. The YASTUNING Stage 1 remap file takes it to 310 hp and 460 Nm, a gain of +20 hp and +19 Nm. Engine code LM4. The file is checksum-corrected and reviewed by an experienced calibrator within factory component tolerances.