02 Sensor location on Turbo Tony DP - Miata Turbo Forum - Boost cars, acquire cats.

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Old 05-13-2008, 07:40 PM   #1
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Default 02 Sensor location on Turbo Tony DP

Ok, I searched the forum and came up with this:
"Rule of thumb, 1600F is a pretty reasonable "max" for cruise or boost."

And this https://www.miataturbo.net/forum/sho...temperature%22 which tells its better to use a bung near the car as oposite to the location just off the turbo.

since i'll be retarding from 12 to 6 with a MSD, on a 1 per pound of boost scale, and this brings the EGT to higher temperatures, the question is:
Can a AEM Wideband 02 deal with the heat if placed just a bit below the turbo? Tony told me he made the bung a bit down for FM Heat Shield clearance, but it will still be close. Or as a general rule, it should always be placed further away?

I'm just asking cause from what i read before, as the EG go into the DP and expand, they cool off, therefore in my understanding this would cause misreadings from the wideband? Or am i just talking ****, and the location down below is not a problem and my wideband can still give me accurate info?

thx again!
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Old 05-13-2008, 07:47 PM   #2
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I would add another bung on top of the DP, before the cat for the WBO2
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Old 05-13-2008, 07:53 PM   #3
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so use 2 you mean?
stock goes to start of DP, and down near the cat fit the wideband.
and which one do i use to connect to the ecu?

and sorry with all the questions, but why should i keep both if only one connects to the stock ecu?
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Old 05-13-2008, 08:00 PM   #4
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Narrowband to the ECU and monitor with the wideband. If you insist on using the narrowband simulator to feed the ECU, put a blank bung in the top hole.
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Old 05-13-2008, 08:05 PM   #5
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i see. there's no benefit to the stock ecu from getting a more accurate reading from a wideband. it will behave just the same, right?
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Old 05-13-2008, 08:11 PM   #6
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The narrowband, to me, is preferable since it is a chemical reaction and not subject to change where a WBO2 can go out of calibration. The ECU will behave the same with either if they are accurate.
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Old 05-13-2008, 08:12 PM   #7
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thx, you tha man...
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