WideBand O2 sensor 3.2/ what brand and explain

[VMAX1]

I have been looking to install a wideband O2 sensor, but I am not really sure what brand and how to use it or set it up. I do know it is needed to really dial in the AFM Today is my retirement day and I am sure there will be plenty of time to install this. thanks for your input.

[juanbenae]

there have been a number of threads on this very recently. try a search for "aem" who has a number of kits available with the sensor, wiring harness and gauge. make sure you get the one with the 11' of wire to reach from the motor compartment to the dash area. thread talk about differing wire routing, gauge mounting and installs. many these days do not require any calibration effort, simply plug & play. well if you consider pulling wire through the tunnel "plug & play"

[aread]

I got the AEM one, under the advice of Sal Carceller: Here is a like to it on ebay AEM 30-4110 WIDEBAND O2 UEGO CONTROLLER AIR FUEL RATIO GAUGE KIT (Bosch 4.9 LSU) | eBay.

Very straight forward install, especially if your not using the stock O2 sensor. I personally dont like the looks of aftermarket gauges, but if your cable management is neat enough, the supplied wire will run from the exhaust bung to the glovebox, where I "hid" my gauge.

[Pazuzu]

I had an LC-1 for about 1.5 years and hated it from day 1. Was always unstable, required frequent zeroing, the wires are like 24 gauge and hard to connect to real wires in the harness, and the "brain" part sits in the engine bay cooking.

Switched to the AEM digital one, and I love it. No zeroing, no wiring in the engine bay (the "brains" are all in the gauge itself), better looking gauge, and always gives me a clean signal.

There are some more obscure brands (14.7, PLX, etc) but the AEM is common, works great, is pretty cheap, and does the job.

[VMAX1]

Alex, is the one on the link you gave me the one you have? I do want the plug and play, for sure. I don't want to calibrate something all the time. I like the phrase, Keep it simple..

[VMAX1]

How about a dumb question? How does the O2 sensor connect to the harness going to the ECU?

[dicklague]

My personal opinion is that the Daytona-Sensors Wego IV is the only wideband to have.

It is available from Pelican. I have been using one for 10 years on my 2.7 MFI 911, and it is great.

The best feature is that it stores up to 2 hours of date which includes AFR, RPM, and vacuum/pressure using a MAP sensor.

without being able to chart and study the data, you are at a real loss.

I keep looking at AEM and I just don't get it. You need to be able to study RPM AFR and load on engine to make any meaningful corrections.

The Wego IV has a usb port in the front panel and you download that data using the included software. You can chart it, or look at it on a spreadsheet.

Very accurate and extremely well build in the USA!

[aread]

Originally Posted by VMAX1

Alex, is the one on the link you gave me the one you have? I do want the plug and play, for sure. I don't want to calibrate something all the time. I like the phrase, Keep it simple..

Yep thats what I got. No calibration, no dialing it in. sensor plugs right into the gauge and then hook the gauge up to an IGN wire and ground and your off to the races.

[dicklague]

Originally Posted by aread

Yep thats what I got. No calibration, no dialing it in. sensor plugs right into the gauge and then hook the gauge up to an IGN wire and ground and your off to the races.

Any data collection? Can you chart and study the data, or do you have to take notes while driving??

[cabmandone]

I have one by 14.7. After a bit of a learning curve on the software I'm pretty happy. With mine it will store one data log or you can plug in a laptop and do real time logging with multiple runs. It uses Winlog which I think is the software that Sal likes and used when I was tuning my car.
Here's the site: https://www.14point7.com/

[jlex]

Congrats on the retirement.... what work were you doing?

[scarceller]

AEM has several gauges to pick from but only the 30-4110 uses the better LSU4.9 sensor.
The 30-4110 also has the ability to output a simulated narrow band signal via the white wire, this allows you to feed this signal back to the original O2 harness and put the DME back in closed loop O2. But you MUST read the instructions for the 30-4110! You need to move a rotary switch in the gauge to position #4

The 30-4110 is very basic simple high quality WBO2 gauge, as mentioned it can not do logging but it's still a good gauge to have. Extra bonus is that the controller is built into the gauge, no separate boxes or custom harnesses with circuitry in the harness, super simple to setup and use. It also let's you select between AFR or Lambda, I work only in Lambda so I love the lambda feature!

Then AEM has the 30-4900 fail safe gauge. This gauge uses the older LSU 4.2 sensor but it has some extra features:
- AFR Logging
- RPM logging
- Has built in MAP sensor and can log intake vacuum
- Logger can log 3 hours of data!
But it does not offer narrow band simulated output.
Here is the gauge:
Wideband Failsafe Gauge | AEM

My personal WBO2 equipment is from TechEdge, I have several gauges and a handheld but these are difficult to setup and not for the novice, they also require extensive configuration to get them to do what you want. See website:
WBo2.com WIDEBAND AFR/LAMBDA (Tech Edge)
The higher end units are amazing with the amount of inputs they support! My best unit from these guys is the DIY kit but it took me days to assemble! But it logs a lot of data:
- AFR
- RPM
- Three 0-5vdc inputs
- Three thermo couplers
- Built in digital readout on the box
- Hours of logging
TechEdge also has multi sensor units that support two WBO2 sensors and even a top of the line 12 sensor unit!
And most every tech edge can support the LSU4.2 or LSU4.9 sensors but I use only the 4.9

[Fast Mike]

Here is my AEM gauge in action. Very good quality with a nice harness.

[scarceller]

Here's another good thread:
AEM Wideband O2 gauges

And read up on 4.9 vs 4.2 here:
Bosch LSU 4.9 is superior to LSU 4.2 sensors - ECOTRONS

The MOST important feature of any gauge is the heater control, these sensors MUST be heated correctly by the controller. AEM uses the Bosch circuitry to control the sensor's heater, this is very important because you will destroy a sensor in very short order with improper heater control! And never leave a WBO2 sensor in the exhaust stream without the controller heating the sensor! That will also cause sensor failure. I don't want to mention brand names but not all gauges are created equal, the AEM gauge for under $200 is a great quality gauge for the money. Do your homework before you buy one, find out and ask about heater controller and what chip/circuitry does it use?

[scarceller]

Mike, nice clean simple install! Looks great!

Originally Posted by Fast Mike

Here is my AEM gauge in action. Very good quality with a nice harness.

[WideRide 86]

Thanks for the detailed info Scaceller. Im curious if it would be reasonable to effectively replace the narrow band O2 sensor with the AEM 30-4110 and use the 0-1v output from the controller and send that to the DME; using only the stock O2 sensor bung location.

If so, is there a concern about a specific voltage drop over the "white wire" to the DME? I've read somewhere that when you replace an O2 sensor you are supposed use the same length cable, which can be an issue sometimes with universal O2 replacements. So maybe it would be sensitive in this case too?

I like the idea of only having one unit and not having to get a second bung welded on. Thanks for your input!

Anyone else use the AEM 30-4110 to drive the O2 signal to the DME?

Originally Posted by scarceller

AEM has several gauges to pick from but only the 30-4110 uses the better LSU4.9 sensor.
The 30-4110 also has the ability to output a simulated narrow band signal via the white wire, this allows you to feed this signal back to the original O2 harness and put the DME back in closed loop O2. But you MUST read the instructions for the 30-4110! You need to move a rotary switch in the gauge to position #4

The 30-4110 is very basic simple high quality WBO2 gauge, as mentioned it can not do logging but it's still a good gauge to have. Extra bonus is that the controller is built into the gauge, no separate boxes or custom harnesses with circuitry in the harness, super simple to setup and use. It also let's you select between AFR or Lambda, I work only in Lambda so I love the lambda feature!

....

[scarceller]

That AEM 30-4110 has a white output wire that can be setup to output a narrow band signal. You need to turn a rotary switch in the gauge to the proper setting to do this, gauge instructions has all the details.
You can then simply send the white wire to the DME's original O2 signal line, will work perfectly and the length of the white wire won't matter much.

But if you do not have a cat converter the 3.2L engine when properly setup runs far better with no O2 feedback in open-loop mode. This engine does not idle very well at 14.7AFR closed loop target. The engine idles far better in the 13.8 to 14.4AFR range, and you set that up using the mixture screw on the Air Meter.

Enjoy!

Originally Posted by WideRide 86

Thanks for the detailed info Scaceller. Im curious if it would be reasonable to effectively replace the narrow band O2 sensor with the AEM 30-4110 and use the 0-1v output from the controller and send that to the DME; using only the stock O2 sensor bung location.

If so, is there a concern about a specific voltage drop over the "white wire" to the DME? I've read somewhere that when you replace an O2 sensor you are supposed use the same length cable, which can be an issue sometimes with universal O2 replacements. So maybe it would be sensitive in this case too?

I like the idea of only having one unit and not having to get a second bung welded on. Thanks for your input!

Anyone else use the AEM 30-4110 to drive the O2 signal to the DME?

[WideRide 86]

Thank you so much Sal. Great info. I appreciate the response (despite the age of this thread!). A ton of good info here. Didn't want to start another one at this point. Cheers.
~Doug