5.3 V8 294hp Stage 1 tuning

The Buick Rainier 5.3 V8 294hp produces 294 hp and 441 Nm as standard. The YASTUNING Stage 1 remap file takes it to 310 hp and 465 Nm, a gain of +16 hp and +24 Nm. Engine code 5300 Small Block. The file is checksum-corrected and reviewed by an experienced calibrator within factory component tolerances.