Can you takt a cat out?

Honest John Back Room » Technical matters
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Mon 19 Aug 2002 09:27
Can you takt a cat out? - Ross D
Hi all.

Was wondering if anyone could help.

After reading a few car magazines I have come across various cars which have had 'cat by-pass pipes' fitted. These cars have been M registered.

A salesman recently tried to sell me a stainless straight through exhaust. Do these straight through exhausts have CATS.

Cheers
Ross
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Mon 19 Aug 2002 17:40
Can you takt a cat out? - John S
Ross

A 'straight through' exhaust simply means it uses absorption type silencers, and not baffle type. No reason at all why this can't be used with a cat.

Anything with an M reg must have a cat - no question. It'll never pass on emissions without.

Cat by-pass pipe? Is this a system which can either by-pass the cat or use it for MOT time? Probably not worth the effort, as you really need the ECU reprogrammed to take full advantage of removing the cat. This applies mainly to those cars which were fited with cats before they became a legal requirement.

Regards

John S
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