CBR600RR ECU ECM CDI black box computer brain (KEIHIN, 38770-MFJ-D04, 8640-220420)
![](images/categories/Honda-CBR600RR-CDI-ECU-brain-KEIHIN-38770-MFJ-D04.jpg)
We also need one of the transponder (chip) keys in order to test/repair this module!
We also need one of the transponder (chip) keys in order to test/repair this module!