Early fuel evaporator

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The Early fuel evaporator is a device found in some internal combustion engines with carburetors. It can sometimes be referred to as an Electronic fuel evaporator. The device on a car, commonly referred to as an EFE heater is located between the throttle body of the carburetor and the intake manifold as a gasket and contains a resistance grid that heats the air/fuel mixture. The purpose of the EFE heater is to aid with vaporization of fuel in cold conditions, as well as to reduce exhaust emissions by running for about two minutes to allow for leaner choke calibrations.^[1]