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LUCAS 14CU ECU - This ECU is part of the 'hot wire' airmass system introduced in 1990. Hot wire systems measure the mass of air entering the engine and compensate for humidity, atmospheric pressure and altitude. Moving flap systems measure air flow and cannot easily meet modern emissions legislation.
LUCAS 5AM 'HOT WIRE' AIRMASS METER - This is the other half of the Lucas airmass fuel injection system - see 14CU ECU immediately above - which contains the hot wire airmass measuring components. The heated platinum wires are contained in a small air bypass tunnel so are not visible.