Summary Notes

[joecar]

IBPW is the commanded injector pulsewidth, the scantool provides pids for this (IBPW1, IBPW2, INJDC1, INJDC2).

IPW is the internal injector pulsewidth as would be computed by the PCM before converting it to IBPW.

This is how IBPW appears to be computed from IPW:

IFR = lookup(B4001)(injector flow rate);

IPW = airmass / AFR / IFR * 1000;
 
IPW = IPW + TF(transient fueling modifiers);

if IPW <= B9021(minimum transient pulsewidth) then 
    IPW = B9021;

else if IPW <= B4003(minimum pulsewidth) then  
    IPW = B4004(default pulsewidth);

else if IPW < B4006(small pulse threshold) then  
    IPW = IPW + B4005(small pulse adder);

end

IPW = IPW + B3701(voltage/manvac offset); 

IBPW = IPW; 

(table name is shown as a green comment following the table id)

This is important because correctly modeling the injectors is critical, it allows the rest of the tuning exercise to correctly fit into place, and it allows dynamic fueling (i.e. port wall wetting/evaporation) to work properly.
5.7ute has performed some difficult and time consuming experiments to arrive at that sequence, good job Mick

See here: showthread.php?13364-IBPW-B4005-B3701-correlation