that wont give you any extra fuel on its own dude, sure it will give higher fuel pressure but the fpr will just dump the excess back to the tank. The std digi pump should be able to supply more than enough pressure for the digi injection anyway!
If you want more fuel you can either fit a different fpr which a higher pressure rating, or fit bigger injectors. The injectors will probably be the easiest way to go, do you have any idea how much extra fuel you want, you really need to figure this out you cant just chuck more fuel in and expect it to work well
