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Catalytic Converter Protection

The EMS2000 will also protect the Catalytic Converter by deactivating the injectors. If the EMS2000 detects a "misfire" (ignition, injection or combustion) it can selectively deactivate the Final Stage output transistor for that cylinder(s).

The injector(s) will not open, preventing unburned fuel from entering the exhaust system.

On the EMS2000 system, there are four individual injector circuits resulting in deactivation of one or multiples. This will limit engine power, but protect the Catalytic Converter.

Fig 1: Fuel Injector Cut-Off Function
G04724678Courtesy of BMW OF NORTH AMERICA, INC.