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Aeromotive Bypass Regulator

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10:00 a.m.: We decided to run a return line on this vehicle. The Atomic EFI kit with the fuel system does not include a regulator for a return-type system. Since we are also using TechAFX AN line (see “Better Fuel Line” sidebar), we chose an Aeromotive 13101-A1000 injected bypass regulator. This requires ORB port fittings with O-rings to accept the AN hose fittings. Before starting the engine, we also installed a fuel pressure gauge in the regulator.