I don't think I ever really got an answer on this. The original header and cat are one piece on this engine. There is one O2 sensor before the cat and one after the cat. What happens to these sensors and how would the second one read with no cat on the engine. I would think it would cause the SES light to come on. Is the cat just eliminated like stated above or would I use a different setup for the exaust and have a removable cat below the engine or under the car instead of in the engine bay?

Thanks.
Tom

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