5.3 V8 320hp Stage 1 tuning

The GMC Yukon 5.3 V8 320hp produces 320 hp and 481 Nm as standard. The YASTUNING Stage 1 remap file takes it to 340 hp and 500 Nm, a gain of +20 hp and +19 Nm. Engine code LMG. ECU: Delco E38. The file is checksum-corrected and reviewed by an experienced calibrator within factory component tolerances.