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Old 03-03-2005, 01:59 AM   #1
JDM 3SGTE
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Default Wideband O2 sensor and Helix V2 dp

i have a helix v2 downpipe, which has a built in o2 sensor bung. according to the turboxs tuner user guide, the o2 sensor is supposed to operate at around 750C to get accurate readings. so my question is, are people with w/b's and helix v2's using this location to plug in the sensor? the bung is about 4-5 in. from the turbo flange of the dp. is this safe?
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Old 03-03-2005, 08:11 AM   #2
offset
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I am going to use my Wideband (with Hydra) in the rear O2 location. I think that will be quite a bit safer; and that has been recommended to me by others.

offset
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Old 03-03-2005, 08:39 AM   #3
antimullet
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Quote:
Originally Posted by JDM 3SGTE
i have a helix v2 downpipe, which has a built in o2 sensor bung. according to the turboxs tuner user guide, the o2 sensor is supposed to operate at around 750C to get accurate readings. so my question is, are people with w/b's and helix v2's using this location to plug in the sensor? the bung is about 4-5 in. from the turbo flange of the dp. is this safe?
No its not safe. It may work but it may be off, and it may not last long. Buy a 02 Sensor heatseak and use that along with your 02 Sensor then it will be safe. Check out the innovative website for information about their heatsink. Nice piece but too pricey for a chuck of metal. I'm sure you can probably rig one up with some sparkplug antifoulers. Kinda like a mechanical CEL mod that's what I'm gonna try anyway.
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Old 03-03-2005, 08:41 AM   #4
antimullet
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Quote:
Originally Posted by offset
I am going to use my Wideband (with Hydra) in the rear O2 location. I think that will be quite a bit safer; and that has been recommended to me by others.

offset
Did ya get that car back together bro?

Springs coming and so is the dragstrip and autocross
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Old 03-03-2005, 09:25 AM   #5
fmowry
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Or simply plug that bung and get another one welded in further down in the downpipe or in the midpipe.

Frank
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Old 03-03-2005, 09:41 AM   #6
hondaeater69
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That's why the bung is there, I would put it there. Remember you have an o2 sensor at the end of your exhaust manifold, and it's hotter there than after you turbo, much hotter.
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Old 03-03-2005, 09:55 AM   #7
SlideWRX
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It will be fine. remember, there's an O2 sensor in the exhaust collector before the turbo.

Tom

Doh! I didn't read enough of hondqaeater's post.
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Old 03-03-2005, 10:24 AM   #8
fmowry
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Different O2 sensors have different heat threshholds. The Bosch O2 that comes with the LM-1 (and various Audi-VW applications) will kick an overheat error too close to the turbo. So the answer is "depends on what O2 sensor you are using".

Take antimullets advice and go read the Innovate site regarding WBO2 sensors and heat. They might talk about non-Bosch O2s also.

Frank
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