by Jeff Cushner
Question by Jclaire: Own S40/02 Volvo with bad cat. If I use aftermarket cat will computer recognize and turn off check engine lite?
Mechanics tell me that if I use an aftermarket type of cat converter the software in the computer will not recognize the part. The check engine light will remain on. Is this true? If so is there any way around it?
Answer by Alex
Most likely. You would have to reprogram the computer to not give a crap about the cat at all.
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