Will running higher fuel pressure help reduce the duty cycle of the injectors?

I am currently max out the 290cc injector, it is running 100% duty cycle at 38psi fp now. I just wonder if running higher fuel pressure will help reduce the duty cycle or not?

 

It can help a little. If the injectors are maxed out upgrade them. Too much pressure will decrease flow. The amount of fuel supplied will go down with too much.

Its supposed to be set with the vaccum line disconnected and plugged. The factory spec is 40-47psi.

 

so let say if I turn it up to around 45psi, will it help? It still within factory spec, so it shouldn't be too bad for the injectors.

 

Yes, and you can also go about 10% over stock FPR settings without any ill effects.