The invention relates to a new method and system for optimizing the efficiency of an automotive catalytic converter by adjusting the engine airfuel ratio based on estimates of the actual amount of oxidants stored in the catalyst. A method of resetting the segmented computer network topology includes initiating a reset sequence having a flushing phase, a subsequent scrubber selection phase, a next subsequent slot identification phase and a next subsequent ring start-up phase. The helical path is created between and defined by the passage and the plug to form the choke. Illustratively, when the predetermined number, for example three, base stations are visible to the mobile terminal, the location of the mobile terminal is estimated using time-difference-of-arrival. The second engagement member also includes a contact surface at a second end thereof for engagement by a user to move the second locking member against the biasing force. The first film includes a soft magnetic layer which does not form part of a layer for applying a biasing magnetic field to the free layer.