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What Is 'de-cat' And 'cat-back'?

I would like to replace the exhaust on my 1995 N/A with a Stainless Steel system but don't understand some of the lingo used for them.

 

I understand what a 'cat' is but what is a 'de-cat' and a 'cat-back'?

 

I am not looking for a high performance exhaust, just one that will last for ever (SS) and sounds really sporty but legal.

 

Dave

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    It's deffinitly not legal in Australia, & depending on what state you're in you can find youself with a MEGA fine. That said... I'm de-catted haha.

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    Is a 'de-cat' system legal then? Would it pass the MoT?

     

    Dave

     

    Technically its not road legal to remove cats from a car newer than 1992. It will however pass an MOT becuase the Z32 is older than 1995 as its not in the emissions database so must be tested as a non-cat car.

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    the technicality is that it is illegal to remove the cats from a vehicle that was originally fitted with them, but the car goes through the mot for the reasons legrath said.

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    • Author
    Technically its not road legal to remove cats from a car newer than 1992. It will however pass an MOT becuase the Z32 is older than 1995 as its not in the emissions database so must be tested as a non-cat car.

     

    But my Zed is an 'M reg' N/A manufactured in 1995 so would it be O.K. or not?

     

    Dave

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    Don't be scared Dave lol. Speeding is illegal but im sure you didn't buy your zed to go 30mph lol.

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    But my Zed is an 'M reg' N/A manufactured in 1995 so would it be O.K. or not?

     

    Dave

     

    All vehicles older than 1995 must be tested for the cat test. Im not sure where you would stand, I guess it depends which month yours was manufactured and which exact date the ruling starts from.

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    It depends if its a Jap Import, as they don't have to have a cat for the test either providing they were made prior to 1996 I think.

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