Installation work is unnecessary on vehicles with a catalytic converter, as there is nothing to adjust here. The lambda probe and, accordingly, the Multec control unit take over the solution of this task. Only in doubtful cases, an additional check of the engine idle speed is carried out (770-930 rpm) or CO content (Max. 0.3 vol. % at 2800-3200 rpm without load) If nominal values are not obtained, the air and vacuum hoses, the fuel recirculation system and the activated carbon reservoir system are checked.
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