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Old 10-06-2006, 09:33 AM   #1
Fast_Wrx62
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Member#: 89139
Join Date: Jun 2005
Chapter/Region: MAIC
Location: NoVa
Vehicle:
2002 RIP Bugeye.
PSM

Default Oem 02 front sensor Or Wideband 02 sensor

witch o2 sensor would be better for my o2 wrx my mods:
utec stage 2
TBE with up pipe / catless

I was wondering what front 02 sensor i should get for my car...a wide band or a OEM front sensor...

Thanks,
Chris
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Old 10-06-2006, 09:47 AM   #2
pezman04wrx
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Join Date: Jul 2004
Chapter/Region: NESIC
Location: MA
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I'm not 100% on this, but it's my understanding that the factory o2 sensor remains in there as it's needed by the ecu ... Most people put a secondary wideband in to be used with the additional EM, but it's usually right behind the turbo in the DP ...
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Old 10-06-2006, 09:53 AM   #3
Mulder
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Member#: 11170
Join Date: Oct 2001
Chapter/Region: Tri-State
Location: NYC
Vehicle:
02 WRX
15 WRX/05 GTO

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Yep the front 02 is not a standard wideband and is necessary for proper engine management. If you want to monitor A/F you have to add a separate wideband sensor in the manifold for your A/F gauge.
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Old 10-06-2006, 09:57 AM   #4
Fast_Wrx62
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Member#: 89139
Join Date: Jun 2005
Chapter/Region: MAIC
Location: NoVa
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2002 RIP Bugeye.
PSM

Default

if i were to make other hole for the wide band for my A/F gauge were should I put it and were would be the best spot...also would i get more acc readings from the wideband or the OEM front sensor?


Thanks,
Chris
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Old 10-06-2006, 09:58 AM   #5
marcymarc
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Join Date: Apr 2006
Location: VA
Vehicle:
2013 STi sedan
SWP

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a wideband must be put AFTER the turbo..
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