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Old 05-29-2018, 04:49 PM   #26
RJEJUSA
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Member#: 486564
Join Date: May 2018
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Quote:
Originally Posted by Hagbeard View Post
^^^ Nice!

While you guys are on the subject I'm looking for a direct answer..

For 2018 WRX STI is there a list of CARB/SMOG legal mods?
I realize it's a long way before smog check but rather no go through changing parts all the time. Plus looking for moderate power gain..
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Old 06-04-2018, 07:14 PM   #27
Hagbeard
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Member#: 40286
Join Date: Jul 2003
Location: Los Angeles
Vehicle:
'04 WRX Sedan
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Catbacks, AOS, and intercoolers don't require EOs so those are legal (noise restrictions on the catback is a separate issue). Parts that have gone through the CARB evaluation and have been granted an exemption are legal. Parts that have an exemption and will give you a moderate power gain are generally exclusive of each other. You can search for EOs on parts here. The whole thing is moot since you'd need a tune (illegal) to see the power gains.

The real question is, what mods can you make, get some power, and still pass smog without swapping parts? Quite a bit, actually.
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Old 06-10-2018, 01:53 PM   #28
subaru_gc8
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Join Date: Nov 2002
Chapter/Region: SCIC
Location: Orange County CA
Vehicle:
2004 WRX wagon
silver

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Quote:
Originally Posted by RJEJUSA View Post
While you guys are on the subject I'm looking for a direct answer..

For 2018 WRX STI is there a list of CARB/SMOG legal mods?
I realize it's a long way before smog check but rather no go through changing parts all the time. Plus looking for moderate power gain..
I think they uped it to 8 years on new cars before you have to get a smog check. most bang for your buck is going to be a cobb intake with a access port. Any down pipe will be illegal. so stage 1 is about as far as you can go
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