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kirepp kirepp is offline
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Posts: 6
Join Date: Jan 2020
Car: n54 e91
Default Secondary O2 when single turbo - 09-02-2020, 01:28 AM

I have a single turbo n54 with jb4 and Mac Valve.
Are the secondary o2's being used? I have both of them installed but i want to know if i can remove them? Plan on experimenting with exhaust, thats why.
I have both primary O2's installed.

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Milan Milan is offline
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Posts: 824
Join Date: Sep 2014
Car: 08 335xi
Default 09-03-2020, 08:22 PM

You have to keep one of them and enable it in the flash

09 335 - 6266
07 335i - 6870, E85 - SOLD
08 335xi - 6466, custom direct port meth - SOLD
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