Looks similar to a 2008 ECU I have kicking around... But if you google the serial # it says that it's a 03 600rr ECU.
How you doing I'm having the same problem my bike and I was wondering if you still have it are you saying that you haven't a harness with an ECU for sale for a 2003 CBR600RR I'm not trying to be a pain in the ass flip you anybody out there does have a ECU with the honest for a CBR 600 2003 I would like to buy oneNICE! Thanks! That's what I was thinking. I thought it looked like a Honda ECU, but could think if it was 600RR or 954. I had swapped a motor for a friend of mine who bought an engine with the wiring harness and ECU.
That bike is since long gone. Sell it and the harness? How much is it worth?