In the search for the perfect regulator to use in my EFI packages, I couldn't find one. They either didn't mount correctly, have the proper ports or just didn't look good. SoI decided to design my own.
I have chosen the use the Bosch style interchangeable regulators to cover a wide spectrum of pressures. This adjustable regulator allows you to adjust your base from pressure from 3 to 5 Bar as well as retain a 1:1 vacuum/boost pressure reference.
ECU re-tuning may be necessary if you change your current base fuel pressure.