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Old 11-05-2019, 09:29 PM   #3
WRXnick16
Scooby Specialist
 
Member#: 447898
Join Date: May 2016
Chapter/Region: BAIC
Location: W Sac, CA
Vehicle:
2016 WRX (traded)
2019 STI CWP

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Modifying the PCV system or any other emissions control system is not allowed. You're pretty much limited to replacing things like the air filter, intercooler, catback exhaust, etc.. Almost anything in between is a no-no if it has any impact to emissions. There are some exceptions, but you still have to find a tech that's willing to pass you. Be prepared to take the document linked above with you.

It sucks to live in California if you enjoy modifying cars.
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Last edited by WRXnick16; 11-06-2019 at 12:12 PM.
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