big_wasa
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| posted on 19/10/19 at 02:32 PM |
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To Cat or not to Cat
I am mocking up my exhaust and although I won’t require a Catalytic converter by law for mot I am thinking of adding one any way. A 200 cel one.
So a little pol 
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coyoteboy
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| posted on 19/10/19 at 04:32 PM |
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If you can, the environment karma might thank you for it. But if not, I'm not sure it will really care.
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sebastiaan
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| posted on 20/10/19 at 10:20 AM |
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I did, years ago. Made all the difference in usability of the car as it meant I could drive it to work and not stink up the office by wearing petrol
fume-scented clothes. The hairdrier on the side of your engine means power loss won't be an issue ;-)
Only thing you have to loose is the ability to do spark-cut rev limiting (flames!) and anti-lag (flames and noises!) as that would ruin the cat. Your
choice.
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coyoteboy
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| posted on 21/10/19 at 12:14 AM |
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Pfft tuned properly you shouldn't smell of petrol.
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sebastiaan
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| posted on 21/10/19 at 02:54 PM |
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quote:
Originally posted by coyoteboy
Pfft tuned properly you shouldn't smell of petrol.
with a properly tuned EFI-equipped pinto, yes, you actually do smell of petrol in an open-top seven with side exhaust after a decent drive. At least
in my car this was the case, YMMV depending on exhaust location, etc.
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coyoteboy
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| posted on 21/10/19 at 05:19 PM |
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Jeezo, I wonder what makes it spew unburned fuel.
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MikeRJ
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| posted on 21/10/19 at 06:46 PM |
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quote:
Originally posted by coyoteboy
Jeezo, I wonder what makes it spew unburned fuel.
Pretty much all old non-cat car exhausts smelled of fuel IME.
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coyoteboy
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| posted on 21/10/19 at 07:34 PM |
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My de-catted 3S-GTE doesn't. Or didn't until I cracked a ringland and it misfired lol.
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SJ
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| posted on 21/10/19 at 09:54 PM |
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Don't get why you would bother. My zetec on bike carbs doesn't smell of petrol if a car on efi does you have problems.
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chillis
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| posted on 23/10/19 at 09:49 AM |
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If this is a new build then that age of Zetec (black top) will need a cat. if you are already registered and do not require a cat why would you
complicate things.
I know the rules may change in the future but I would wait until then before adding a cat.
Never under estimate the ingenuity of an idiot!
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