There are 2 relays down behind the ECU - 1 is the ECCS relay, the other is Ign Coils. Both relays are probably working, since you have spark happening. The ECCS actually supplies power to the coil relay.
When IGN is applied, the injectors should have direct 12V (ECU switches them to earth). Check for continuity in the loom between each injector plug and its corresponding pin at the ECU - 1 - 1, 2 - 12, 3 - 3, 4 - 13, 5 - 2, 6 - 11
How did you test the injectors?