Can you have to much fuel pump?

kesteb said

Then how can Areomotive sell the same fuel setp for carbs and efi, and the only difference is the fuel regulator? Tanks Inc does the same thing with their intank setups.

The pump provides the volume, the regulator, the pressure ,by introducing a restriction into the system. This is for a BYPASS system. Do not confuse this with a DEADHEAD system.

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The regulator does not provide any pressure whatsoever. It changes pressure. It provides nothing.

The difference in the example you give is the regulator because EFI needs more fuel pressure than a carburetor, so the carbureted system requires a regulator that can regulate to lower pressure. Most carbureted regulators will only go to around 10-20 PSI and that is even way to high for any carburetor. It is not high high the carbureted regulator can adjust, but how low. Since the EFI system needs much more pressure, it requires a different regulator.

Another way to look it is like the spillway of a dam. The regulator provides nothing. It allows it. The source of all pressure AND volume is the pump.