Fuel Regulator Neccesity

[acidburn1204]

I recently changed my stock MR2 turbo's fuel pump with a Supra's. The engines stock and im using an SAFC. Will adding an FSE Fuel regulator give any advantage in any way? Is it neccesary?

 

[K-Kid]

Fuel pressure regulator - it allow you to adjust the pressure where your factory one is restricted. Say you have a bigger fuel pump but your FPR only allow a certain pressure, more fuel is pumped but there is not enough pressure in the rail to the injector. Each of them have to cope with each other to perform a good fuel delivery system. Correct me if i'm wrong. :)