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Old 06-21-2006, 06:14 PM   #1
Scooby Newbie
Member#: 118157
Join Date: Jun 2006
Default AIR/FUEL RATIO GAUGE Installation

Could someone please help this is my first WRX and got this air/fuel gauge but I dont know were the o2 sensor is located. 2003 WRX
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Old 06-21-2006, 06:22 PM   #2
Uncle Scotty
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Join Date: Mar 2002
OK buy Nates beans


....stop......wait...research.....pointlessness avoided.

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Old 06-21-2006, 06:24 PM   #3
Jon [in CT]
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Join Date: Nov 2000
Chapter/Region: NESIC
Location: Connecticut, USA
02 WRX Sedan


The chart at http://www.northursalia.com/modifica...ng/wrxpin.html should help. It shows the meaning of the wires connected to the ECU, hidden behind a plate under the top of the carpeting on the passenger's side. It's easiest to tap the sensor signal there. It's for a 2002 but will work for your purposes on a 2003. You want to tap the rear oxygen sensor signal for your meter.
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Old 06-23-2006, 07:34 PM   #4
Scooby Newbie
Member#: 118157
Join Date: Jun 2006

Thanks alot man, I am still pretty new with the WRX.
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Old 06-23-2006, 08:15 PM   #5
Scooby Guru
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Join Date: Apr 2004
Location: a pillow.

he forgot to mention splicing a 02 gauge into the stock system won't give you any usefull information. Sell that crap on Ebay and either get a real standalone Wide band system, or go cheap and get an EGT setup.
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Old 06-24-2006, 09:35 PM   #6
Scooby Specialist
Member#: 106366
Join Date: Jan 2006
Chapter/Region: MAIC
Location: VA
2006 WRX


dude do not waste your money on a crap "air Fuel ratio gauge" it does absolutly nothing. Its just a light show and a "look at me Im straight up NOS yo" toy. Just buy a wideband and get a bunge welded into your downpipe. or buy the cobb/megan downpipe with the bung already in. You can get an AEM Wideband for $250.
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