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Old 01-09-2010, 12:37 AM   #1
HamFist
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Member#: 2112
Join Date: Aug 2000
Chapter/Region: MWSOC
Vehicle:
2000 Impreza 2.5RS
BRP

Default Moving o2 sensor into the header...

Anyone done this? I know it will fit and I can wire it in. However, does moving the o2 sensor forward upset the ECU? The o2 sensor in the rotated downpipe interferes with my WAIC core. Moving it is my only option to one of two places--1.) REALLY far down the downpipe which I know is bad. 2.) pre up-pipe with an 04+ exhaust manifold...which I've never done but I think would work.

Thoughts? I want to use one of these manifolds to relocate it.

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Last edited by HamFist; 01-09-2010 at 12:43 AM.
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Old 01-09-2010, 01:51 AM   #2
PhilSine
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Join Date: Oct 2006
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Location: Superior, WI
Vehicle:
02 WRX Wagon (WRB)
98 OBS-T, 91 Legacy SS

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The pre-turbo one will be fine since it is a stock WRX location. The only O2 sensor you don't want too close to the engine or pre-turbo is a wideband O2.
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Old 01-09-2010, 11:32 AM   #3
HamFist
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2000 Impreza 2.5RS
BRP

Default

Cool. Thanks.

What kind of O2 sensor is in the WRX manifold, though? Putting a narrow-band there from the factory makes less sense. Does the heat kill widebands?
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