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Old 10-18-2006, 06:48 PM   #1
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Default WBO2 too close to turbo?

Hello,

I have a 1990 with a DIY T3s60 turbo on it. It is actually a used DIY kit that I got super cheap and have refreshed and stuck on. Link Ecu, big isuzu FMIC, etc. I plan on running around 12pis once I get a new diff.

The downpipe is some custom 2.5" creation, and the O2 bung is very close to the turbine exit. (like almost right across from it) I just got an AEM WBO2 (gauge type) and want to hook it up, but am somewhat worried that it will be damaged from the heat.

Anyone have a WBO2 go bad because it was too close to the turbo? I can't see the exhast temp being much different a foot or two down the pipe considering the temperatures and flow rates, and yet there is a warning on the box to locate it further away if possable.

If it does die, anyone know what a new sensor runs for?

Last edited by Braineack; 10-18-2006 at 11:20 PM.
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Old 10-18-2006, 07:05 PM   #2
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Everyone seems to recommend it being at least a foot or so away from the turbine exit. I believe a new sensor runs around $100.
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Old 10-18-2006, 07:05 PM   #3
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I think that would be too close. While I got no specific errors on my wideband mounted close to the turbo and while I didn't get an error on the wideband the narrowband output made my car run poorly when it got really hot. I think this is because the WB sensor was getting too hot. I since went back to a four wire feeding the ECU and it's a lot better.

I wouldn't take the chance, move it as far from the turbo as you can with in reason.
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Old 10-18-2006, 11:18 PM   #4
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The plx instructions that came with my wideband said at least 16" or something like that, I took it to a muffler shop and had them weld on a bung about 24" from the turbine.

You want it far from the turbo but pre-cat if you run one.
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Old 10-18-2006, 11:20 PM   #5
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cap that bung and weld a new one just before the cat.
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Old 10-18-2006, 11:35 PM   #6
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Yea, this is pretty much the responce I expected. Damn, can't take the lazy way out. Guess I'll have to find a spot back by the cat where the sensor can stick up. Maby run the wires through the shift boot.
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Old 10-18-2006, 11:37 PM   #7
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exactly.
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Old 10-19-2006, 08:36 PM   #8
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Innovate has this.

http://www.innovatemotorsports.com/x...cat=250&page=1

but its probably cheeper to move the bung.

Try to mount the sensor with the probe facing down, as water can damage the sensor if it manages to drip inside.
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Old 10-19-2006, 10:27 PM   #9
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My local exhaust shop charged me $10 to weld a bung on my downpipe before the cat. I figure it to be fair, that might just be under-the-table Tennessee prices though. I figure a Midas or somewhere would do it for $20 though if you had your own bung maybe.
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Old 10-20-2006, 04:00 PM   #10
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Local (YMMV) Midas hooligans wanted 30 bucks to weld a bung (the *****) Dude down the street, 10 bucks cash.
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