430i 252hp Stage 1 tuning

The BMW 4 serie GC 430i 252hp produces 252 hp and 350 Nm as standard. The YASTUNING Stage 1 remap file takes it to 287 hp and 450 Nm, a gain of +35 hp and +100 Nm. Engine code B48B20B. ECU: Bosch DME841, Bosch MG1CS003. The file is checksum-corrected and reviewed by an experienced calibrator within factory component tolerances.