4.2 V8 354hp Stage 1 tuning

The Audi S5 4.2 V8 354hp produces 354 hp and 440 Nm as standard. The YASTUNING Stage 1 remap file takes it to 375 hp and 465 Nm, a gain of +21 hp and +25 Nm. Engine code CAUA. ECU: Bosch MED9.1. The file is checksum-corrected and reviewed by an experienced calibrator within factory component tolerances.