I'm reading and learning here, also. My turbo system is old school and a draw thru system. So no need for fuel pressure compensation. I just used a holley blue pump, with the Holley "dead head" type regulator. On my nitrous engine/car, I used twin "universal" part store inline electric pumps, in parallel. Pumps at approx 50psi. Each pump is able to run the system alone (that way a pump failure would not cause a lean condition). The pumps fed a return flow regulator, set for 20 psi. Then the fuel went to twin holley "dead head" regulators, one feeding the carb, and the other feeding the nitrous system.