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Full Version: do i need to use both o2 sensors?
6G Celicas Forums > 6th Generation Celica > Engine/Transmission/Maintenance
stormmage88
i got a exhaust header from ebay that only has one hole in the exhuast for the o2 sensor but my stock exhaust has two o2 sensors. do i need to use both or not.

thanks for your help

http://www.ebay.com/itm/110831298865?ssPag...984.m1497.l2649
Hanyo
you will need both o2 sensor or you will have a check engine light
stormmage88
thanks.. ill cutt out the part of the pipe that holds the second sensor and weld it to the new exhaust
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