Myk984g63
Proven Member
- 105
- 34
- Oct 8, 2020
-
Bakersfield,
California
My rear O2 sensor is installed close to half way under the car, near the back of driver's seat from previous owner. Is that too far away for accurate readings for my wideband?
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No cat. (I know a smog ninja) 3" catless from O2 housing back to a Agency power exhaust. It just seems like it's too far back for an accurate reading
Positioning the sensor too close to the exhaust ports can expose it to high exhaust gas temperature (EGT) as well as over-cooling from the high-velocity exhaust gas flowing over the sensor. Likewise, if an engine runs excessively rich, an oxygen sensor that’s positioned farther downstream is less prone to fouling. Although these extreme conditions aren’t a concern in most street applications, placing the sensor farther down the exhaust tract is rarely detrimental.
So do I need to move it forward towards the downpipe Jason?If there's no cat and you still run a factory front o2, it will be fine. What you don't want is to be simulating the front o2 from that far back.
Then I'll be moving it ASAP. Thanks for the input everybody! Slowly getting it dialed in for a WOT tune. It's boosted to 10psi with no hiccups so far but don't want to push it harder than that for now. I'll update soon!Three feet from the head is recommended for wideband sensors.