I've looked at a lot of GM files...B4005 has many differnt "looks" depending on what car /injectors it's in. It's not a standard slope.
I've had to change mine bigtime to get 86lb low imp injectors to work in COS5. I've watched some of the changes by using RR in realtime....
I'm getting close but would like to understand the small pulse adjustments better. The nice thing about the table is that it will command an adder where you want it....plus it can be a negative adder which is nice with big injectors.
It and the voltage oddsets are the keys to big injector tuning.