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Old 04-21-2017, 02:24 PM   #1
steve9842015
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K04, California, and Smog

Hey all,

Haven't been on here in forever, but it's the first time I need to smog the car and I'm having quite a bit of issues.

K04, I have the non test-pile and a 42dd spacer on the last oxygen sensor (place doesn't do visual). I'm having a problem getting all monitors to clear readiness, specifically the cat itself. I keep throwing a P0420 no matter what I do with the spacer it seems. I've extended it out as far as I believe it can go, I've oriented the spacer towards the front and rear of the car, etc, but within 10 minutes of driving on stock file it'll pop a soft code and eventually the MIL. Any other suggestions?

I've been trying to get everything cleared with VCDS and I can get all monitors to show passed except for the cat, once again. Using basic settings on group 046 (cat bank efficiency), I can run the test and it'll eventually show CatB1 Not Okay.

My question is, does anyone know the parameters for the cat efficiency to pass readiness tests? During the test the conversion number will sit around 0.03-0.06, then after a minute or so it'll show Not Okay.

Any help would be greatly appreciated.

For other K04s in California, what has worked for you?
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Old 04-21-2017, 05:52 PM   #2
nafljhy
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you could try using a mini cat o2 extender and the spacer or just the mini cat o2 extende.

https://www.amazon.com/Minicat-Senso.../dp/B00CBKEC06

something like that.
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Old 04-22-2017, 12:10 PM   #3
Geryon86
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Quote:
Originally Posted by steve9842015 View Post

For other K04s in California, what has worked for you?
I temporarily swapped in a modified stock DP.
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Last edited by Geryon86; 04-22-2017 at 06:51 PM.
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Old 04-22-2017, 12:16 PM   #4
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I use stock downpipe, not much work and a sure thing.
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Old 04-22-2017, 12:54 PM   #5
steve9842015
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Is there enough space to add a bung on a cfba downpipe? Always heard people needing to use a ccta
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Old 04-22-2017, 03:38 PM   #6
NUISANCE
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Just swing down south and borrow my modded CCTA downpipe, I'm an hour south of San Jose. You can use it to pass, I used it to pass the state ref inspection, but I will need a deposit to make sure I get it back. I won't charge you for the use and I will give you back 100% of your deposit. Let me know.
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Old 04-22-2017, 03:40 PM   #7
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Quote:
Originally Posted by steve9842015 View Post
Is there enough space to add a bung on a cfba downpipe? Always heard people needing to use a ccta

No there isn't enough space and you can't just swap in a CCTA downpipe because you have to modify the mounting flange and weld in a bung under the car. I already did all that work for you though
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Old 04-22-2017, 11:22 PM   #8
Mk6_vic
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when I go k04 ill take part in that transaction please ^ lol
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Old 04-24-2017, 05:18 PM   #9
steve9842015
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Thanks for the offer! I ended up getting it to pass smog today, I really didn't want to have to deal with swapping downpipes if I could avoid it.

I ended up putting a spark plug non fouler in the pre-cat sensor and the 42dd+non fouler in the post-cat sensor and it cleared readiness immediately! Smog place was a simple obdii plugin and they didn't do a visual so it only took a few minutes. Took the spacers off immediately after and finally got this thing registered.

Thank goodness. Putting these away until next time.
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Old 04-24-2017, 06:49 PM   #10
BudgetPhoenix
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Quote:
Originally Posted by steve9842015 View Post
Thanks for the offer! I ended up getting it to pass smog today, I really didn't want to have to deal with swapping downpipes if I could avoid it.

I ended up putting a spark plug non fouler in the pre-cat sensor and the 42dd+non fouler in the post-cat sensor and it cleared readiness immediately! Smog place was a simple obdii plugin and they didn't do a visual so it only took a few minutes. Took the spacers off immediately after and finally got this thing registered.

Thank goodness. Putting these away until next time.

I want to know where this place is
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Old 04-26-2017, 10:44 AM   #11
damagi123
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Quote:
Originally Posted by steve9842015 View Post
Thanks for the offer! I ended up getting it to pass smog today, I really didn't want to have to deal with swapping downpipes if I could avoid it.

I ended up putting a spark plug non fouler in the pre-cat sensor and the 42dd+non fouler in the post-cat sensor and it cleared readiness immediately! Smog place was a simple obdii plugin and they didn't do a visual so it only took a few minutes. Took the spacers off immediately after and finally got this thing registered.

Thank goodness. Putting these away until next time.
so where do you have the sensor thats supposed to be on the turbo?
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Old 04-26-2017, 10:48 AM   #12
ebuuz
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Let me get this straight.

If you can run the k04/f23t on stock mode without throwing a CEL (via spacers/spark plug non-foulers), then you will pass OBDII inspection. Correct? This is assuming the shop overlooks visuals.
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Old 04-26-2017, 11:27 AM   #13
steve9842015
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Quote:
Originally Posted by ebuuz View Post
Let me get this straight.

If you can run the k04/f23t on stock mode without throwing a CEL (via spacers/spark plug non-foulers), then you will pass OBDII inspection. Correct? This is assuming the shop overlooks visuals.
Yep, as long as you have a non test-pipe file for stock mode.

Quote:
Originally Posted by damagi123 View Post
so where do you have the sensor thats supposed to be on the turbo?
That sensor is at the very top of the flange on the down-pipe (billy boat tbe).
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Old 04-26-2017, 11:58 AM   #14
damagi123
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Quote:
Originally Posted by steve9842015 View Post
That sensor is at the very top of the flange on the down-pipe (billy boat tbe).
do you know if all aftermarket cbfa downpipes have a bung for the sensor from the turbo?

I have an ultimate racing CBFA and the lower part I can see my 2 sensors but i cant get far enough under right now to see if theres a bung near the flange if I wanted to go K04
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