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Q: catalytic converter on 2005 Ford Taurus

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
If replaced catalytic converter thats shot with straight pipe what preformance will happen ? Will only sensors be messed up or engine also? ford 2005 Taurus,will engine or code default compesate for sensor code?
(1) Answer
Not exactly sure, but it will have a big effect on the signals from the rear oxygen sensor, which will change the fuel mixture, set a check engine light and make it run very inefficiently. You will be emitting more pollution into the air and modifying the vehicle in such a way as to actually make it worth less.
Really not a good decision.