3.5i 400hp Stage 1 tuning

The Alpina B3 S 3.5i 400hp produces 400 hp and 540 Nm as standard. The YASTUNING Stage 1 remap file takes it to 450 hp and 600 Nm, a gain of +50 hp and +60 Nm. Engine code N54B30A. ECU: Bosch MEVD17.2. The file is checksum-corrected and reviewed by an experienced calibrator within factory component tolerances.