Wideband o2 location question for tuning...

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Aug 24, 2005 | 03:30 AM

Takumi Fujiwara

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From: Little Tokyo, CA, USA

Wideband o2 location question for tuning...

My hytech header has an O2 bung before the collector, where 2 pipes of only 2 cylinders merge...

I had an extra o2 bung welded on before the cat just after the header collector.

Does is matter which O2 bung is used for the wideband for tuning? Will it give me different readings depending on which O2 bung I use?

Aug 24, 2005 | 07:07 AM

jmcclell

Joined: May 2004

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From: Bangor, UK, UK

Re: Wideband o2 location question for tuning... (Takumi Fujiwara)

It's best to place the sensor on or after the header collector. You need to get an average reading of all 4 cylinders as there will be a difference with each cylinder pair due to a small variance of its air flow characteristics, volume and injector flow rate.

No two cylinders are the same

Aug 24, 2005 | 08:10 AM

Takumi Fujiwara

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Joined: Mar 2003

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From: Little Tokyo, CA, USA

Re: Wideband o2 location question for tuning... (jmcclell)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jmcclell »</TD></TR><TR><TD CLASS="quote">It's best to place the sensor on or after the header collector. You need to get an average reading of all 4 cylinders as there will be a difference with each cylinder pair due to a small variance of its air flow characteristics, volume and injector flow rate.

No two cylinders are the same

</TD></TR></TABLE>

Not just an answer, but an explanation too... thanks!