California emissions questions - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

bdanisi · 04-23-2013, 01:12 AM

Hello!
I was wondering what would make me fail a smog check in California. For my car I would like to swap out my headers for uel headers most likely by Rev works and then also swap out my front pipe for a high flow catted option. I was told by someone that even with a cat on the front pipe I could still fail smog. Is this true for catless headers as well? Ideally I will change out my headers front pipe and over pipe. Is this just a pipe dream (lol) or in theory could I still pass smog?
Cheers!

86_ZN6 · 04-23-2013, 01:16 AM

removing the primary cat (changing headers) will fail you right away

best bet is to keep your oem parts and re install them before you get a smog

and that's after like 5 years right? or 6?

bdanisi · 04-23-2013, 01:21 AM

Quote:

Originally Posted by 86_ZN6

removing the primary cat (changing headers) will fail you right away

best bet is to keep your oem parts and re install them before you get a smog

and that's after like 5 years right? or 6?

Yea that's prolly the most realistic way of handling this. And as far as the headers go, lol at your insta fail comment. I figured that's how it would work haha thanks

Tim_Asphalt_FRS · 04-23-2013, 01:30 AM

Unless someone makes a header with a heat shield that looks OEM, then we're all kinda SOL in terms of smog check. Swapping back to stock is really the only option at this point.

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bdanisi · 04-23-2013, 01:45 AM

Quote:

Originally Posted by Tim_Asphalt_FRS

Unless someone makes a header with a heat shield that looks OEM, then we're all kinda SOL in terms of smog check. Swapping back to stock is really the only option at this point.

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Forgive me but what would the oem style heat shield accomplish?

86_ZN6 · 04-23-2013, 01:46 AM

Quote:

Originally Posted by bdanisi

Forgive me but what would the oem style heat shield accomplish?

PASS visual inspection

tracerit · 04-23-2013, 01:51 AM

would any of the popular exhausts (perrin resonated catback or milltek catback) fail a smog check? i guess i don't have much to worry since the car is new, but just curious.

bdanisi · 04-23-2013, 01:54 AM

Quote:

Originally Posted by tracerit

would any of the popular exhausts (perrin resonated catback or milltek catback) fail a smog check? i guess i don't have much to worry since the car is new, but just curious.

By definition catback should never fail anything since it's from the catalytic converter back. But I guess it's not impossible

Tim_Asphalt_FRS · 04-23-2013, 01:56 AM

Quote:

Originally Posted by tracerit

would any of the popular exhausts (perrin resonated catback or milltek catback) fail a smog check? i guess i don't have much to worry since the car is new, but just curious.

Anything catback is legal as long as its under 95 decibels.

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Tim_Asphalt_FRS · 04-23-2013, 01:57 AM

Quote:

Originally Posted by bdanisi

Forgive me but what would the oem style heat shield accomplish?

Like @86_ZN6 said, it will pass visual inspection. I don't know if it would pass the tailpipe test.

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bdanisi · 04-23-2013, 02:01 AM

While I have the attention of people more mod savvy than I, are their any associated possible long term health issues that could arise from not having a heat shield? I mean for the engine I guess

sw20kosh · 04-23-2013, 02:24 AM

A long the same lines of questioning....

Would bigger injectors (for E85 or FI) and a tune be a problem for smog check (assuming no E85 or FI is installed on the car during smog testing, and assuming all emissions equipment is intact)?

Basically what I am getting at is do the injectors need to be swapped back to stock for smog because that would be a major PITA.

Tim_Asphalt_FRS · 04-23-2013, 02:28 AM

Quote:

Originally Posted by bdanisi

While I have the attention of people more mod savvy than I, are their any associated possible long term health issues that could arise from not having a heat shield? I mean for the engine I guess

No. Ceramic coated headers are actually better than a heat shield anyways.

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Tim_Asphalt_FRS · 04-23-2013, 02:32 AM

Quote:

Originally Posted by sw20kosh

A long the same lines of questioning....

Would bigger injectors (for E85 or FI) and a tune be a problem for smog check (assuming no E85 or FI is installed on the car during smog testing, and assuming all emissions equipment is intact)?

Basically what I am getting at is do the injectors need to be swapped back to stock for smog because that would be a major PITA.

For E85: if you're NA with all emissions equipment you'll be fine.

For FI: I'm not sure, because if you swapped everything back to stock except the injectors wouldn't it run too rich? That's my guess. Visual inspection you'll pass. I'm not sure if you'd pass the tailpipe test. I've never gotten that far into the mod process on a car.

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04-23-2013, 01:12 AM	#1
bdanisi You Made Bro? Join Date: Dec 2012 Drives: Raven 86 Location: Laguna Niguel Posts: 520 Thanks: 134 Thanked 241 Times in 112 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	California emissions questions Hello! I was wondering what would make me fail a smog check in California. For my car I would like to swap out my headers for uel headers most likely by Rev works and then also swap out my front pipe for a high flow catted option. I was told by someone that even with a cat on the front pipe I could still fail smog. Is this true for catless headers as well? Ideally I will change out my headers front pipe and over pipe. Is this just a pipe dream (lol) or in theory could I still pass smog? Cheers!

04-23-2013, 01:30 AM	#4
Tim_Asphalt_FRS Is it fast? No. Join Date: Aug 2012 Drives: 2013 Scion FR-S Manual-Asphalt Location: Vista, CA Posts: 604 Thanks: 824 Thanked 164 Times in 122 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Unless someone makes a header with a heat shield that looks OEM, then we're all kinda SOL in terms of smog check. Swapping back to stock is really the only option at this point. Sent from my iPhone using Tapatalk __________________ 2013 (Rebadged) Toyota GT-86 {Perrin intake tube, aFe dry air filter, custom 2.5" exhaust, PLM overpipe, Kartboy crank pulley, Hotchkis springs, custom Flossy grip tape shorty, TRD shifter, Berk HFC, Whiteline Sway-bars} [Wanted: Delicious Stg 2 tune, Bilstein struts]

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04-23-2013, 01:16 AM	#2
86_ZN6 Senior Member Join Date: Apr 2012 Drives: 86 ZN6 Location: SF Bay Area, NorCal Posts: 4,682 Thanks: 1,317 Thanked 2,072 Times in 1,222 Posts Mentioned: 126 Post(s) Tagged: 1 Thread(s)	removing the primary cat (changing headers) will fail you right away best bet is to keep your oem parts and re install them before you get a smog and that's after like 5 years right? or 6?

04-23-2013, 01:51 AM	#7
tracerit Senior Member Join Date: Aug 2012 Drives: '13 SSM BRZ Limited 6MT Location: Orange County, CA Posts: 1,067 Thanks: 593 Thanked 198 Times in 137 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	would any of the popular exhausts (perrin resonated catback or milltek catback) fail a smog check? i guess i don't have much to worry since the car is new, but just curious.

04-23-2013, 02:01 AM	#11
bdanisi You Made Bro? Join Date: Dec 2012 Drives: Raven 86 Location: Laguna Niguel Posts: 520 Thanks: 134 Thanked 241 Times in 112 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	While I have the attention of people more mod savvy than I, are their any associated possible long term health issues that could arise from not having a heat shield? I mean for the engine I guess

04-23-2013, 02:24 AM	#12
sw20kosh Senior Member Join Date: Jul 2012 Drives: 2013 Black FR-S Location: SF Posts: 3,030 Thanks: 881 Thanked 2,014 Times in 990 Posts Mentioned: 153 Post(s) Tagged: 1 Thread(s)	A long the same lines of questioning.... Would bigger injectors (for E85 or FI) and a tune be a problem for smog check (assuming no E85 or FI is installed on the car during smog testing, and assuming all emissions equipment is intact)? Basically what I am getting at is do the injectors need to be swapped back to stock for smog because that would be a major PITA.

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