Ok thought I would throw this out there. I am in the process of running an aeromotive fuel pressure regulator. The one question I have is if I do this can I get rid of the return line comming off the fuel rail? I will still have a return but it would be like the ls1 and not be in the rail. I think this would work but thought I would throw it out there and see.

 

If the Aeromotive regulator is in fact returning the fuel to the tank, then yes, you would only need to run one fuel line to the TPI rail, and the rail mounted regulator would probably act as a pulsator (pulsation dampner). You will need to block off the return line from the rail.

Just out of curiosity, why would you want to do this?

 

To have more fuel pressure control. I decided to build my fuel system this year with an aeromotive pump -8 feed line and aeromotive recomends there regulators to be used with there fuel pump.