Which o2 sensor is it?
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This is a discussion on Which o2 sensor is it? within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; is the o2 sensor found right after the dp knwn as the precat or postcat sensor? I didnt know because ...

  1. #1
    Registered User Wilz02wrx's Avatar
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    Which o2 sensor is it?

    is the o2 sensor found right after the dp knwn as the precat or postcat sensor? I didnt know because its after the uppipe which has cats but before the one on the exhaust so any help would be apprieciated
    Dirty Crew #8807
    02 wrx 246awhp sold to get 03
    03 wrx 400awhp also sold to get a house
    currently shoping though

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  3. #2
    Registered User Wilz02wrx's Avatar
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    and will a universal one work?
    Dirty Crew #8807
    02 wrx 246awhp sold to get 03
    03 wrx 400awhp also sold to get a house
    currently shoping though

  4. #3
    Moderator Donkey's Avatar
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    The sensor on the midpipe is the post cat or cat efficiency sensor.I would just use a oem replacement.
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    2002 FORESTER S
    1998 FORESTER S




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