Hi All.
This is aimed at blackbird owners this a know fault.
This drawing was done by Honda UK tec guy at the NEC last year.
If your F1 light comes on your blackbird there is a fault.
There is a small factory black box which is attached to ECU power cables in this box are pins and they corroded over time my black box is near the battery it’s worth doing even it’s not on as noticed it performed better when was done.
Cheers
Stephen