B3L-8591A-71 (update)  automaticly replaces  B3L-8591A-70

By using this ECU with kit wire harness, it is possible to adjust the amount of fuel injection, ignition timing and etc.
This ECU has two diffrent mode and the mode can be swiched ; SB (Superbike) and ST (SuperStock).
CD-ROM, software manual and kit manual are included in this set.

【IMPORTANT】
Check the R1 PARTS COMBINATION TABLE for the combination.
No other combination is allowed to use.