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BMW 3-Series (E90 E92) Forum
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Do I need secondary 02 Sensors?
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| 01-01-2014, 08:55 PM | #1 |
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Colonel
 
483
Rep 2,283
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Do I need secondary 02 Sensors?
If I have the tune to eliminate the emissions codes thrown by catless headers Do I still need secondary 02 sensors?
Arent the secondary 02 sensors just there for emissions purposes? Supposes I had one secondary 02 sensor plugged in just not screwed into the exhaust (just set off to the side), would this work or does it need to be in the flow of the exhaust? Thanks for any input guys
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