428i 245hp Stage 1 tuning

The BMW 4 serie GC 428i 245hp produces 245 hp and 350 Nm as standard. The YASTUNING Stage 1 remap file takes it to 280 hp and 430 Nm, a gain of +35 hp and +80 Nm. Engine code N20B20A. ECU: Bosch MEVD17.2.4, Bosch MEVD17.2.9. The file is checksum-corrected and reviewed by an experienced calibrator within factory component tolerances.