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Decat
pipes |
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There seems to be a lot of confusion
surrounding what a 'Cat' does, what happens when you remove it and the
MOT requirements.
Here are the answers:-
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The catalytic converter
(CAT) helps to convert carbon monoxide into carbon dioxide. It converts
the hydrocarbons into carbon dioxide and water. It also converts harmful
nitrogen oxides back into nitrogen and oxygen. |
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The lambda or O2
sensor, is the key sensor in the engine fuel control feedback loop. The
ECU uses the O2 sensor's input to control the amount of O2 in the exhaust
gases and balance the fuel mixture, keeping it
within a very narrow Air/Fuel ratio band of +/- 0.03% of 1.0
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The O2 sensor is fitted
in the exhaust before the CAT, so removing the CAT will have no effect on
the function of the O2 sensor, fuel mixture or the running of the engine
other than to let it breathe better. |
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The current MOT test
does not include a gas analyser check and as far as we are aware it
will not be introduced in the near future, so you are quite within the
law to remove the CAT in the UK.
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All our Decat pipes have provision for lambda O2 sensor
where fitted as original equipment |
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