How many catalytic converters are on this car? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Jahris · 01-12-2016, 06:55 PM

I live in Ca, smog restrictions! How can I get the most flow in the exhaust with a uel header without getting cel's and still pass smog? Thanks for your time.

CSG Mike · 01-12-2016, 06:57 PM

You cannot pass smog with ANY aftermarket header.

Shoekabob · 01-12-2016, 06:57 PM

There are two cats, one in the header and one in the front pipe. I'm not sure if you'd be able to pass CA emissions with either removed, but I don't know much about the requirements.

ryoma · 01-12-2016, 07:00 PM

swapping back your stock header just for smog checks is probably your best bet. if you do some stupid stuff on the street and get pulled over, the cop could also want to check out your car and send you to the state ref. you would need to swap back to stock for that as well

Jahris · 01-12-2016, 07:00 PM

Quote:

Originally Posted by Shoekabob

There are two cats, one in the header and one in the front pipe. I'm not sure if you'd be able to pass CA emissions with either removed, but I don't know much about the requirements.

Will the catless header throw cel's?

Lord09 · 01-12-2016, 07:03 PM

Quote:

Originally Posted by Jahris

Will the catless header throw cel's?

Yes. You'll need some type of tune to turn it off.

Jahris · 01-12-2016, 07:13 PM

Quote:

Originally Posted by Lord09

Yes. You'll need some type of tune to turn it off.

What type of tune are speaking of?

_gt86_user · 01-12-2016, 07:43 PM

Quote:

Originally Posted by Jahris

What type of tune are speaking of?

You just need a simple Off The Shelf (OTS) tune, your best bet is the Openflash tablet. You may go ecutek if you choose just depends how much you want to spend and what your future goals are. Or try your luck with a CEL (O2) sensor spacer and no tune up to you.

Jahris · 01-12-2016, 07:55 PM

Quote:

Originally Posted by _gt86_user

You just need a simple Off The Shelf (OTS) tune, your best bet is the Openflash tablet. You may go ecutek if you choose just depends how much you want to spend and what your future goals are. Or try your luck with a CEL (O2) sensor spacer and no tune up to you.

Afe has catted header, will cel's show then? I have the obd2 scanner tool to turn off cel's. Is that the same?

Lonewolf · 01-12-2016, 08:24 PM

Running catless in California is a lot like having unprotected sex with strippers. Sure, you might escape the bad stuff for a while, but eventually you get syphilis...er, I mean ticketed

ryoma · 01-12-2016, 08:38 PM

not to mention those rolling smog checks... they have calmed down lately though.

Bykov · 01-12-2016, 09:13 PM

Quote:

Originally Posted by CSG Mike

You cannot pass smog with ANY aftermarket header.

This ^
Even if you buy a catted header, it will still fail smog without a CARB sticker since you are in California. The only thing you can do for your exhaust legally is a cat-back and an OP (but even that is debatable because the law states modifications can be made only after the last cat however the OP does not replace any emissions equipment). Luckily it's not worth arguing because it won't do anything for you without a full exhaust.

steve99 · 01-12-2016, 10:37 PM

This is still not strictly legal
But get an OFT

Run the E85 EL header tune on a completly stock car
No cel problems
Car is completly stock hardware wise
If you do get pulled for a complete inspection jist fill tank with petrol again and flash back stock tune takes 5 munites no tools ect

E85 tune on stock car worth about 20hp just e85 fuel and a tune.

wise345 · 01-12-2016, 11:21 PM

Just get the header you want and switch it back to stock before smog. As far as CEL's you can get an O2 spacer which isn't a guaranteed fix or just go for a tune for a definite fix. A tune will not make you pass smog however

01-12-2016, 06:55 PM	#1
Jahris Member Join Date: Dec 2015 Drives: 2013 Scion FRS Location: Pomona Posts: 23 Thanks: 3 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	How many catalytic converters are on this car? I live in Ca, smog restrictions! How can I get the most flow in the exhaust with a uel header without getting cel's and still pass smog? Thanks for your time.

01-12-2016, 07:00 PM	#4
ryoma Senior Member Join Date: Mar 2015 Drives: 2015 Subaru BRZ Limited CWP Location: SoCal Posts: 1,561 Thanks: 34 Thanked 669 Times in 469 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	swapping back your stock header just for smog checks is probably your best bet. if you do some stupid stuff on the street and get pulled over, the cop could also want to check out your car and send you to the state ref. you would need to swap back to stock for that as well __________________ My 2015 CWP BRZ Build

01-12-2016, 08:38 PM	#11
ryoma Senior Member Join Date: Mar 2015 Drives: 2015 Subaru BRZ Limited CWP Location: SoCal Posts: 1,561 Thanks: 34 Thanked 669 Times in 469 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	not to mention those rolling smog checks... they have calmed down lately though. __________________ My 2015 CWP BRZ Build

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01-12-2016, 06:57 PM	#2
CSG Mike Join Date: Jul 2012 Drives: S2000 CR Location: Orange County Posts: 14,530 Thanks: 8,918 Thanked 14,175 Times in 6,834 Posts Mentioned: 966 Post(s) Tagged: 14 Thread(s)	You cannot pass smog with ANY aftermarket header.

01-12-2016, 06:57 PM	#3
Shoekabob Member Join Date: Oct 2015 Drives: 2013 Ultramarine FR-S Location: Los Angeles Posts: 11 Thanks: 2 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 2 Thread(s)	There are two cats, one in the header and one in the front pipe. I'm not sure if you'd be able to pass CA emissions with either removed, but I don't know much about the requirements.

01-12-2016, 08:24 PM	#10
Lonewolf Senior Member Join Date: Dec 2011 Drives: Moped Location: CA Posts: 4,298 Thanks: 4,897 Thanked 2,128 Times in 1,193 Posts Mentioned: 21 Post(s) Tagged: 0 Thread(s)	Running catless in California is a lot like having unprotected sex with strippers. Sure, you might escape the bad stuff for a while, but eventually you get syphilis...er, I mean ticketed

01-12-2016, 10:37 PM	#13
steve99 Banned Join Date: Dec 2013 Drives: FT86 Location: Australia Posts: 7,998 Thanks: 1,035 Thanked 4,987 Times in 2,981 Posts Mentioned: 598 Post(s) Tagged: 2 Thread(s)	This is still not strictly legal But get an OFT Run the E85 EL header tune on a completly stock car No cel problems Car is completly stock hardware wise If you do get pulled for a complete inspection jist fill tank with petrol again and flash back stock tune takes 5 munites no tools ect E85 tune on stock car worth about 20hp just e85 fuel and a tune.

01-12-2016, 11:21 PM	#14
wise345 Slow I am, boost I must.. Join Date: Dec 2015 Drives: Whiteout 2013 FRS Location: Cleburne TX Posts: 309 Thanks: 66 Thanked 41 Times in 36 Posts Mentioned: 0 Post(s) Tagged: 2 Thread(s)	Just get the header you want and switch it back to stock before smog. As far as CEL's you can get an O2 spacer which isn't a guaranteed fix or just go for a tune for a definite fix. A tune will not make you pass smog however

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