[Gmecm] Injector firing

[Rob Handley]

Looking on Ludis' site, the 727 and 749 schematics are the same.

If I interpret them correctly, a single line from the U2 chip feeds two 
injector driver chips (U13 & U15) - which provide 2 pairs of injector wires 
at the connectors on the 727 (not sure about the 749). So, I understand this 
to mean that ALL injectors fire together - whether the engine is L4, V6, or 
V8. Is this right? If so, this would be 'batch' injection, no?

According to my Haynes Engine Management book, with batch injection all 
injectors are fired once every crank revolution. Could somebody tell me if 
this is how $58 does it?

Robin