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Good Evening Gents,

I have to fix the muffler of my 156 2.5 v6 2001, but I’m thinking to take the catalyst away. Here I have no problem with co2 regulation at the moment.

My question is the 2.5 v6 has an oxygen sensor on the catalyst? I do not want to upset the signals to the ECU.

Any comments will be greatly appreciated

BRgds
Rob.Pap
 

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Do you have a CF2 or CF3 version of the engine management? CF2 has the ECU in the passenger compartment, CF3 has the ECU on the back of the plenum.
 
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if only one cat then the oxygen sensor is BEFORE the cat, simply remove the cat & replace it.
 
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