Stock RB25 ECU capability - Technical Sorta?

[RB30-POWER]

Guys,

Just hoping someone can answer a few questions.

Does the factory R33 ECU have full sequential injection operation?

How many load/map points does the ecu have?

Does the unit simply retard the ignition timing X degress under detonation or does it constantly used a closed loop feedback system adding timing until detonation like a delco unit?

Anyone got any tech info on the Hitachi made unit in general of its capabilities?

What are the general capabilities of the ecu in say comparison to a delco unit from a late model GM car?

Cheers