5.3 V8 326hp Stage 1 tuning

The GMC Sierra 5.3 V8 326hp produces 326 hp and 472 Nm as standard. The YASTUNING Stage 1 remap file takes it to 345 hp and 495 Nm, a gain of +19 hp and +23 Nm. Engine code LMG. ECU: Delco E83. The file is checksum-corrected and reviewed by an experienced calibrator within factory component tolerances.