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Old 04-10-2011, 08:14 AM   #1
Vlad
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Member#: 46135
Join Date: Oct 2003
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Location: NY
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02 WRX
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Default Antilag: Rally cars are catted?

Can anybody comment about antilag's effect on catalytic converters?

I think I've read somewhere that rally cars are mandated to have a catalytic converter. But they use antilag. So what does that kind of EGT and fuel wash do to a converter?

My guess is that here, the technology of the metal substrate was born and maybe the metal substrate is imune to the effects of antilag.
Also the antilag only works for seconds at the time.

Is anybody using this "all the time" and can make a comment on what happened to the converter?

Also, please don't repeat the comment about the life of the turbo being reduced, I have read that, everybody knows about it.
If however you can supply figures,(you've used antilag for 6 months and then replaced the turbo), then please mention that. Of if you have evidence that short life turbo is a myth, mention it.

Thanks, guys.
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Old 04-10-2011, 10:24 AM   #2
gotti
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the cat on most US rally cars is put at the very tip of the exhaust where the muffler would normally be. The cat is also very very small.
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Old 04-10-2011, 10:35 AM   #3
Vlad
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ok, that is significant.
Do you know of what kind it is, maybe metal substrate?
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Old 04-10-2011, 11:12 AM   #4
Geek Guy
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NASA Rallysport, yo!

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No cat required in NASA open classes.
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Old 04-11-2011, 08:31 AM   #5
sureshot007
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Quote:
Originally Posted by Geek Guy View Post
No cat required in NASA open classes.
RA requires a cat, but more importantly, your state might require a cat to pass inspection, and your car is required to be street legal. Could be grounds for a protest. Just sayin'....
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Old 04-11-2011, 09:22 AM   #6
gotti
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Quote:
Originally Posted by sureshot007 View Post
RA requires a cat, but more importantly, your state might require a cat to pass inspection, and your car is required to be street legal. Could be grounds for a protest. Just sayin'....
Correct. Rally America and USRC do require a cat and do a check during tech. NASA rules do not require one, but you could be pulled over and ticketed depending on the state. During tech there is also a sound check that I believe all organizations do so that is something else to think about.

There are many different companies for the cats and it depends on your budget. Here is one company. http://www.randomtechnology.com/
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Old 04-11-2011, 10:43 AM   #7
RB5 Clone
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rally car cats get eaten up by the antilag or torn off on stage...either way they rarely last very long.

when mounted at back of the exhaust in normal muffler location they seem to last a bit longer, evidently the gases have cooled or burnt out a bit by the time they get that far aft
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Old 04-11-2011, 09:20 PM   #8
REDrum
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Cat on my wrally car is mounted downstream of muffla. Cats in DP w/ anti lag don't even have nine lives...
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