The black box controls cold start enrichment, over run fuel shut off, on boost enrichment and full throttle enrichment only
You have more than likely plugged some wires on the wrong sensors most common for people to get wrong is the auxiliary air valve and coolant temp sensor
The blue injector needs unplugging and checking it doesn't leak
For all the input data the black box recieves it only controls the electro magnetic fuel pressure actuator on the side of the metering distribution head
Disconnect the 2 wire connector when running rev it see if the fault is cured
Start there
These cars require an expert to fix them the system is complex