I am pretty sure it is sequential rather than batch, the original name for that particular system is CSFI, central sequential fuel injection. It replaced the TBI systems before it. That said i think it gets away with the simpler crank and cam triggers because it is still a spinning distributor with one coil as opposed to the coil on plug that replaced it.
For those that are not familiar i am talking about this intake system i am talking about with the injectors inside the plenum.
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