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CAT Exhaust for IVA


lewis

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I need to order an exhaust for my Mazda build soon but don't really want to spend £568 on their CAT exhaust. I'd rather get a new non CAT exhaust from them and buy/borrow a CAT exhaust for when it comes time to get my IVA (hopefully around March next year).

 

Does anyone have a CAT exhaust they no longer need?

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Will have another look :)

 

How can you tell the difference between a CAT and non CAT exhaust?

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I have one you'd be welcome to borrow but it's from a standard westfield zetec exhaust  setup, so i;m not sure if the Mazda one is different?

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If you type 'catalytic converter' into the search option on EBay you'll see standalone types that can be welded into a system or have flanges welded to them or several regular car ones which you may find you could easily and cheaply adapt.

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I thought your donor was a 1994 Eunos? That being the case get an engine dating letter from Mazda UK and with the age of your engine you wont then have to do the CAT emissions test at IVA.

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Yeah it is.

 

I've been looking in the IVA manual again. And I think this is my emissions path:

 

Untitled.png

 

So my only question is, will that exhaust on ebay linked above be suitable?

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I thought your donor was a 1994 Eunos? That being the case get an engine dating letter from Mazda UK and with the age of your engine you wont then have to do the CAT emissions test at IVA.

 

^^

This

All I had to do was provide the original donor logbook at IVA and prove the engine by engine nuber.

No CAT on my exhaust. CO 3.5% and HC 1200 ppm

 

But a failsafe way is the Mazda letter

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Yeah it is.

 

I've been looking in the IVA manual again. And I think this is my emissions path:

 

Untitled.png

 

Spot on Lewis, you wont need a CAT in your silencer to pass that

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