FUel Questions??
1. Im about to replace my stock 140k fuel pump with a walbro 255 hp, Do i NEED an Ajustable fuel pressure regulator? Or would a New Delphi stocker will do for my power level?
Like sepno77 mentioned, you're going to need a tune for the injectors, but in all likelihood you won't NEED THEM. The 503 is fed all the time by stock injectors just fine. Save your money and put it elsewhere.

