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  1. ppc

    Low idle after new exhaust

    I think your wrong on your assumptions. The US ODB1 (93-94) systems use one sensor as you say cyl 1-3 and cyl 4-6. Both provide feedback to the ECM. The ODB2 (95-97) uses the front and back design where the front monitors the exhaust from all cylinders for ECM fueling control and the rear...
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