if the injectors seem to turn off after time... did you look at the PE_rpm_vs_time table? it if leans out after a while then that could be the cause... that or could it be the fuel pump cant keep the pressure up? what is the injector pulse width? is it close to being static?
as for scaling the injector IFR's your right its not recommended... i have heard that some to it so that commanded AF matches their wide band... but if you have the wide band on the car just look at it...i would never trust commanded when you can look at the actual AF.
