O2 Sensor??? - Subaru WRX Forum
 
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post #1 of 3 Old 02-01-2011, 04:36 PM Thread Starter
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Question O2 Sensor???

Correct me if I am wrong,

The O2 sensor is a wideband, but the ECU limits it to 11-20.9 AFR readings. (Found this on iwsti.com)

I am having a hard time believing that the ECU limits your readings. Also does anyone know of a good Wideband set up to go with? Or do these cars even need one?

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post #2 of 3 Old 02-01-2011, 05:26 PM
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I thought the limitatation on the front sensor was because of its location making it somewhat blind. I've seen richer than 11.0 before, but not by much. It was like 10.8 according to the AP. I'm replacing mine soon though so it might be different after that. I haven't looked into additional or aftermarket ones yet. I'm going to keep watching this thread though for when smart people chime in.
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post #3 of 3 Old 02-01-2011, 05:32 PM Thread Starter
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Quote:
Originally Posted by Hondafan View Post
I thought the limitatation on the front sensor was because of its location making it somewhat blind. I've seen richer than 11.0 before, but not by much. It was like 10.8 according to the AP. I'm replacing mine soon though so it might be different after that. I haven't looked into additional or aftermarket ones yet. I'm going to keep watching this thread though for when smart people chime in.
I have done some reading and according to others it is because of its location but that is dealing with engine heat and other aspects. I was told best place to put one (wideband) is in the dp.

So I did some more searching and came across this:

MTX-L Wideband O2 Digital Air/fuel Ratio Gauge

The reason I ask this is because I was talking with Eric at TP and he told me the AP is limited to only reading 11.0:1 on the bottom side. Therefore, for me to really see what those readings are on his map I need a wideband O2 sensor.

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