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03-19-2021, 01:50 PM | #1 |
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SCCA Auto-x catalytic convert info
Hello everyone, Hope you're all having a fine friday. Im here today to ask about catalytic converters and the autocross rules applying to them for the street prepared class. I am simply wondering if I need to run a catalytic converter on both my headers and also the front pipe, or if I can get away with just one or the other.
Thank you all for your shared knowledge. Enjoy the spring roads, Drive safe!
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03-19-2021, 01:56 PM | #2 |
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I believe just the front pipe is ok. That certainly has been the case for years in STX and I believe the rule is shared here.
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The Following User Says Thank You to cjd For This Useful Post: | series420 (03-19-2021) |
03-19-2021, 03:43 PM | #3 |
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Thank you very much for this info
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03-19-2021, 03:48 PM | #4 |
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STX requires that you keep one cat
"Any catalytic converters are allowed with the following constraints. Multiple catalytic converters may be replaced by a single unit. The inlet(s) of the replacement converter(s) must be located between the cylinder head and a point 6” (152.4 mm) further along the exhaust flow path from the original exit of the final OE converter." Street prepared allows for the removal of all cats. |
03-19-2021, 04:14 PM | #5 |
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Official rules can be found here: https://www.scca.com/downloads/53335...-book/download
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The Following User Says Thank You to whataboutbob For This Useful Post: | series420 (03-19-2021) |
03-19-2021, 04:47 PM | #6 | |
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Quote:
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The Following User Says Thank You to series420 For This Useful Post: | whataboutbob (03-19-2021) |
03-19-2021, 11:44 PM | #7 |
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Oh well then! I was too lazy to go double check.
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03-20-2021, 09:57 AM | #8 |
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What class?
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03-20-2021, 04:28 PM | #9 |
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07-09-2021, 08:25 PM | #10 |
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No cat required in street prepared.
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