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Old 09-19-2007, 05:26 AM
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andytitterton andytitterton is offline
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Join Date: Sep 2007
Location: Staffordshire, England
Posts: 63
Thumbs up Cat removed - 1989 S3 Spider

Any comments regarding removal of the catalytic converter and running the car without?

Background first though - I'm in the UK and the whole exhaust was shot when I bought the car. I am not obliged to fit a catalytic converter because of the age of the car, and since they are quite expensive, I bought a standard exhaust system instead. I read up on the Lambda sensor, and since this measures the percentage levels of gases in the exhaust and feeds the signal back to the ECU, I welded it into place at an appropriate point the correct distance from the manifold. The car seems to run ok, but should I be leaving the Lambda off altogether or not?

While I have your interest, if anyone in the USA has a right side fender liner that they could post to Illinois, please get in touch.......
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