Ight i did some investigating on my own, and i'm trying to get a fuel pump from a local shop, and they said with a fuel cell, you can't run a return line into the cell, they just have the one fuel line going to the intake. Gm says its 50-55 psi, and there is a regulater on the fuel rail. Anyone else with a fuel cell mind tellhin me how they set their fuel system up. Thanks