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Installing Downpipes this week- o2 Spacer?

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Old 05-05-2024, 07:45 PM
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Installing Downpipes this week- o2 Spacer?
Getting ModalWorks catted Downpipes installed this week, and after plenty of investigating, I can't find a clear answer if o2 spacers are needed on Catted Downpipes?

Just want to make sure I'm doing this correctly as I would like to avoid a CEL, lmao.

Appreciate any feedback. Gracias!
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Old 05-05-2024, 08:05 PM
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Originally Posted by seabiscuit
Getting ModalWorks catted Downpipes installed this week, and after plenty of investigating, I can't find a clear answer if o2 spacers are needed on Catted Downpipes?

Just want to make sure I'm doing this correctly as I would like to avoid a CEL, lmao.

Appreciate any feedback. Gracias!

Your tuner can wipe the CEL for the o2. I have catless DPs so I wouldn’t sweat the CEL.
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Old 05-05-2024, 08:22 PM
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Unfortunately not getting it tuned :/
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Old 05-05-2024, 08:27 PM
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Originally Posted by seabiscuit
Unfortunately not getting it tuned :/
Ah ok, hopefully someone can chime in here GL
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Old 05-06-2024, 04:44 AM
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Mine came with mini cats-no cel on stock tune
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Old 05-06-2024, 06:41 PM
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Originally Posted by gforc3
Mine came with mini cats-no cel on stock tune
That's what I can't really find- if they are catted, do you really need Spacers?
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Old 05-06-2024, 11:52 PM
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Originally Posted by slowc
Your tuner can wipe the CEL for the o2. I have catless DPs so I wouldn’t sweat the CEL.
The car will still fail emissions in any state that checks for o2 readiness.


Originally Posted by seabiscuit
That's what I can't really find- if they are catted, do you really need Spacers?
If the catted DP's come with an extended secondary o2 bung then I dont see a CEL popping up. Its the secondary o2 sensor that triggers the CEL.
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Old 05-07-2024, 12:29 PM
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That's what I needed to know- thank you!
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