5.7 V8 255hp Stage 1 tuning

The GMC Savana 5.7 V8 255hp produces 255 hp and 447 Nm as standard. The YASTUNING Stage 1 remap file takes it to 275 hp and 470 Nm, a gain of +20 hp and +23 Nm. Engine code L31. ECU: Bosch EDC16C37. The file is checksum-corrected and reviewed by an experienced calibrator within factory component tolerances.