Starving for fuel

[sik sv]

Swaped my long range tank and twin fuel pump setup out of my vn v8 for a standard tank with single internal pump out of a v6, the car is now starving for fuel. As the pumps are supposed to be the same pressure, was there something I missed ? Do you have to change the regulator? I am stumped .

[nathans1987]

i really know nothing about it but a small pump can make a small amount of fuel at a high pressure a large pump at the same pressure would be a lot more fuel or volume of fuel that is just a guess