Aeromotive EFI Fuel Pump / Carbureted Engine / PSI Output

I’m looking at an Aeromotive EFI fuel pump for my new carbureted engine, but I need 7 PSI and your catalog (or your website) says it puts out 43 PSI, won’t this flood the engine?

A common misconception is that fuel pumps "put out" a specific pressure. In reality, pumps provide flow, not pressure, and their performance is defined by flow curves that vary with pressure. Aeromotive provides flow data at specific pressures and voltages, like the A1000 flowing 750 lb/hr at 45 PSI and 13.5 volts, to help users match pumps to their needs.

There are two types of pumps: pressure-limited (for carbureted engines with static regulators) and non-pressure-limited (for EFI systems with bypass regulators). Pressure-limited pumps, like those for carbureted engines, have internal or external bypasses to prevent pressure spikes. Non-pressure-limited pumps, such as the A1000, require bypass regulators to avoid damage from excessive pressure. These pumps are versatile, working in both low-pressure carbureted and high-pressure EFI systems, especially in boosted applications.

Aeromotive’s adjustable bypass regulators work with non-pressure-limited pumps, supporting a wide range of pressures (30-70 PSI) and flow rates. Ensure your pump provides adequate flow at the required pressure for your application.