MT-03 42hp Stage 1 tuning

The Yamaha MT-03 MT-03 42hp produces 42 hp and 30 Nm as standard. The YASTUNING Stage 1 remap file takes it to 47 hp and 35 Nm, a gain of +5 hp and +5 Nm. ECU: Denso B2X-8591A-20. The file is checksum-corrected and reviewed by an experienced calibrator within factory component tolerances.