Simple question today:

Should I put a wideband O2 sensor before or after the cat? I'm assuming before to get an accurate reading, and since the one after is to check that the cat still works...

Read the instructions that come with your kit, is it an Innovate, AEM or what?

I have my Innovate in the stock location, no heat sink, no problems. But before the cat FOR SURE.

Ideally before any flexi as well as they can leak over time, i have mine where it bends after the oil pan before the flexi and its close enough to read accurate and far enough away for it to last as i have had the same sensor for years Near 5 or 6 years now

ChessmoDSM said:

Read the instructions that come with your kit, is it an Innovate, AEM or what?

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Not yet purchased. I am searching for as much info as possible before buying, as I do with everything else.

1990TSIAWDTALON said:

I have my Innovate in the stock location, no heat sink, no problems. But before the cat FOR SURE.

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Thanks Marty, that's what I thought.

ec17pse said:

i have mine where it bends after the oil pan

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I will be going to the collector immediately after the headers, because that's where my current one is.

Oh yea, I'm N/T btw

Stock location

I found this, It is pretty simple but also pretty helpful to anybody with a broad question about wideband o2's.

http://www.wide-band.com/v/vspfiles/VolusionFTP/Wideband_ECU.pdf

BLACK'98DSM said:

I will be going to the collector immediately after the headers, because that's where my current one is.

Oh yea, I'm N/T btw

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Stock location then.. Are you planning on putting a Turbo on this N/T?

Stock front o2 sensor location with ZT-2 for something like 10-12 years. I replaced the sensor one time but it was due to a mis-diagnosed problem and it turned out that the sensor is fine. I keep it as a spare now.

ChessmoDSM said:

Stock location then.. Are you planning on putting a Turbo on this N/T?

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Turbo: no
Tuning: yes

Anywhere before the cat, stock location should be fine.