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AEM Wideband O2 Sensor Install

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Old Apr 14, 2004 | 03:53 PM
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Default AEM Wideband O2 Sensor Install

Just got my AEM O2 Sensor and it says that it must be installed before the catalatic convertors, but on my G35 there really is no room to fit it in. Does anybody know how inaccurate it would be if installed after them? When my Dyno run was done for base line the shop welded in a bung after the cats for their wideband O2 readings. If it is out by .2 O2 by installing it after them it should not be a problem as long as the error is constant. Any help would be great. Brent
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Old Apr 14, 2004 | 04:03 PM
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Is there no room at all? Have you looked closely and maybe try removing the head shield? On the RT cats, there is about 2 inches of space at the top...not much...but the bung fits.
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Old Apr 14, 2004 | 04:18 PM
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I had to cut away some of the heat shield so I could weld in my bung. There was about 4 inches of pipe before the 350z stock cat once the heat shield is cut away.
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Old Apr 14, 2004 | 06:33 PM
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Is it worth it to have 2 WB O2 sensors, one for each cat, and somehow wire it so the gauge could switch between the 2 sensors? I mean what if something was happening on the bank where the WB 02 was not on? Or is that type of risk just near impossible?
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Old Apr 14, 2004 | 06:40 PM
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Unfortunately, it is not possible with the current WB setups available. WB sensors must be heated any time the engine is running. The WB controller controls the heating of the sensor very precisely. Without it the sensor will get clogged with crap very quickly. I asked that question already to the Techedge owner, and he said no dice. They were considering building a two channel controller for a little while, but he doesn't think the investment will be worth the return.
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Old Apr 14, 2004 | 06:45 PM
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Originally posted by jesseenglish
Unfortunately, it is not possible with the current WB setups available. WB sensors must be heated any time the engine is running. The WB controller controls the heating of the sensor very precisely. Without it the sensor will get clogged with crap very quickly. I asked that question already to the Techedge owner, and he said no dice. They were considering building a two channel controller for a little while, but he doesn't think the investment will be worth the return.
Ahhhh thanx again jesse.
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Old Apr 14, 2004 | 06:53 PM
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No problem, just get yourself two wideband controllers, that's what I'm going to do. Mine will share the same display with a switch. Similar to what you're talking about, but with the additional cost of another controller.

BTW, that is only possible with a WB setup that has a separate display and controller box like the Techedge one.
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Old Apr 14, 2004 | 07:06 PM
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Just looked up the cost of an additional controller and it's ~$260
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Old Apr 14, 2004 | 10:15 PM
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Jesse,

Which model of Techedge do you have? Im about to get one but donno which one to get...
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Old Apr 15, 2004 | 05:19 AM
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Version 2A0 is the one I have. However they're going to start shipping version 2B0 if you can wait a week or so. Comes with an extruded aluminum case.


I got the one that's currently listed for AU$520 At the time the American dollar was stronger so it cost a lot less. Get the setup with the 2.6M cable.

System for 7 057 sensor but does not include the 7057 sensor,
includes LD01 display & either 2.6 m or 4.0 m cable with 7057 connector

2B0 features
Some of the changes we've made to 2A0 to give us 2B0 are

* Processor has twice the memory (8k -> 16k) (More onboard logging)

* Differential WBlin output to eliminate offset errors due to earthing
point differential voltages.

* Differential thermocouple inputs to avoid some of the noise that is
present with 2A0's single ended inputs.

* one user input is also differential

* WBlin, SVout & NBsim are now available directly on a connector.

* Additional connector for a fully digital display

* standard 2 x RJ45 connectors (for logging and display simultaneously)
I believe it should also come with an extruded aluminum case.
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