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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain.


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Old 08-24-2015, 05:59 PM   #15
kch
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The only problem with this, unless if I've missed something, is that both (some) ECUTEK and OFT force a "NOT READY" for the 2nd O2 sensor on catless tunes.

Illinois doesn't allow any incompletes or not-ready codes during emissions testing.
I'm no expert, but from what I understand, there are two ways to clear the header CEL. The first is to ignore the second O2 sensor, which forces the "not ready" status. The other is simply to disable the particular code which comes up. That's how my OFT tune is set up and I show 100% Ready.
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Old 08-24-2015, 06:06 PM   #16
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I'm no expert, but from what I understand, there are two ways to clear the header CEL. The first is to ignore the second O2 sensor, which forces the "not ready" status. The other is simply to disable the particular code which comes up. That's how my OFT tune is set up and I show 100% Ready.


Good to hear that there's an OFT workaround for that. I had issues with my last car and readiness checks, post-tune. I ended up having to switch back to a stock tune to get everything to show ready.
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Old 08-24-2015, 06:14 PM   #17
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Good to hear that there's an OFT workaround for that. I had issues with my last car and readiness checks, post-tune. I ended up having to switch back to a stock tune to get everything to show ready.
Just as a disclaimer, I'm only 75% sure I'm right on that. I would double check before making any decisions based on my rambling.
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Old 08-24-2015, 06:35 PM   #18
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code is likely P0420 and caused by no cat, mine comes and goes. I have the same header.
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Old 08-25-2015, 12:34 AM   #19
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Sorry for late reply guys. Was at work. My code is a P0420 and has to do with a exhaust leak according to autozone. I am taking back to shop and C if can get fixed. Also going to talk to them about the header purchase with what the receipt said.
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Old 08-25-2015, 12:34 AM   #20
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Before you do that open the hood and take a picture of the header. I have this horrible feeling you didn't get what you asked for
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Old 08-25-2015, 12:37 AM   #21
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Sorry for late reply guys. Was at work. My code is a P0420 and has to do with a exhaust leak according to autozone. I am taking back to shop and C if can get fixed. Also going to talk to them about the header purchase with what the receipt said.
Pretty much what @Freeman said. Hope this all works out for you.
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Old 08-25-2015, 02:37 AM   #22
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As long as my cel goes away and car does not give other problems not going to make big deal on the header purchase. Do appreciate all the quick reply and suggestions. Will be taking it in a week or two. Car is barely driven so not freaking out that I need to fix right now.

Will keep everyone updated on it and what was done for the car so hopefully can help other people fix problems too
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Old 05-18-2017, 11:32 AM   #23
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my guess is... op went to place that lied to him, killed everyone and is now doing life in prison?


or he just forgot to update. curious though. I just bought a used tomei EL and there is no cat for sure lol I will just try an o2 spacer and see if that works. but I do plan on getting OFT eventually.

@Evil Rocky you still on here???
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Old 05-18-2017, 07:50 PM   #24
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^^ did not kill anyone lol

But I did get fixed with a 02 spacer.
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Old 05-18-2017, 08:04 PM   #25
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^^ did not kill anyone lol

But I did get fixed with a 02 spacer.
So it was in fact a catless header?
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Old 05-18-2017, 09:46 PM   #26
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Yes it was, but the way it was run up through their computer it came up that way. But they are good peeps and still working with them

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Old 05-19-2017, 02:58 AM   #27
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I am sorry to say even with a spacer it is likely your CEL will return.
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