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Old 12-31-2004, 12:37 AM   #1
Scooby Newbie
Member#: 78475
Join Date: Dec 2004
Location: Steubenville
2002 WRX

Subaru Stars How to hook up air\fuel ratio gauge

Can anyone tell my what wire of the o2 sensor to hook a air\ fuel ratio gauge to. I have a 2002 WRX
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Old 12-31-2004, 01:55 AM   #2
Scooby Newbie
Member#: 45338
Join Date: Oct 2003
Chapter/Region: Tri-State
Location: Brooklyn NY
2002 wrx


Go check out http://www.northursalia.com/. Be sure the check out the pin for the ecu for a wrx, the write up is for a gc.
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Old 12-31-2004, 10:21 AM   #3
Trust no one
Member#: 11170
Join Date: Oct 2001
Chapter/Region: Tri-State
Location: NYC
02 WRX
15 WRX/05 GTO


It connects to the rear 02 sensor. Before you go to the trouble of hooking it up however, consider that those gauges really do nothing but light up. It will not provide any accurate or useful A/F information, only a gauge with a dedicated wideband sensor can do that.
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