Why no injector off time on this vehicles factory tune ?

[metalmanimal]

2008 GMC Envoy 5.3 E67 ECM
Looking at the injector timing data and there is no injector off time on this vehicles stock tune. I look at the same year Trailblazer SS that uses the same injectors and it has off time of 780ms. I can't find any other calibrations that have 0 injector off time. Struggling to tune this and wondering if this has anything to do with it.

[blindsquirrel]

What is the ID number ([ECM] xxxx) of this table you've given the new name of 'injector off time'?

[metalmanimal]

Fuel/general/injector timing/injector off-time
ECM 45524
the name HPtuners gave it.

[blindsquirrel]

Both are using OS 12618164
screenshot.05-10-2023 13.55.20.png screenshot.05-10-2023 13.54.34.png

VCM Editor v4.8.7

If this is something newly added in the editor, then it's something that no one has ever been able to adjust on any of these ever before, and unlikely to be the cause of whatever problem you're chasing.

[07GTS]

i think the off time is for the eoit makeup pulses, ive seen some with zero value and some with a value, its not for the actual injector data tho so shouldnt matter