These are your wideband options
10-01-2003, 01:36 PM
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These are your wideband options
The market just got a little more competitive, I'm going to do a quick summary.
Traditionally you had two options for a wideband/lambda O2 meter. These were the MOTEC unit and the FJO offering. These can cost you $600-1000 and up, so I'll be focusing on cheaper solutions.
The new Bosch LSU4 is a windfall to the community because it is OEM equipment on some VWs and can be had for between 30 and 60 dollars. Previously your options were generally the NGK L1H1 and the older BOSCH UEGO sensor (LSM-11?)
What is a narrowband output?
Narrowband is what your stock O2 sensor is giving you, it is of the range 0-1volts, so there is not very much room for resolution or "accuracy." Also it was engineered to save costs, and really only tells you if you are above or at stoich (14.7:1 A/F). This is not accurate enough for tuning.
Pic: http://plxdevices.com/M-200/Na...h.jpg
What is a wideband output. A more complicated 02 sensor element is used, and it can give you more usable resolution, from 0-5 volts. It was also engineered to be accurate, re-calibrateably on the fly, and with less emphasis on making a mass-produced economical unit. A wideband needs a special circuit and power source to control it's delicate heating needs. This is the "wideband controller", or controller box, that you see advertized.
pic: http://www.plxdevices.com/M-20...h.jpg
How can I make use of this:
I see two main options.
Have a bung tapped into your downpipe for a second permanent O2 sensor mount. If you are planning on running the unit in the car full time. Have the ecu running off the stock O2 sensors narrowband output, and do tuning via your dedicated wideband O2 sensor and controlling unit. Once tuned, you can remove the wideband O2 sensor, and use a plug to seal the bung.
The second method is more complicated, but it is more desirable for someoen like myself that uses the wideband portably to tune different cars. You remove the stock O2 sensor unit, and put the wideband sensor in it's place. Then you feed a narrowband output off of your wideband O2 sensor controller to satisfy the ecu. (The narrowband output off the wideband controller, is just the wideband info scaled down to 0-1volts.) For ease of instalation, you can have an OBD1-OBD1 "conversion/crossover" harness, instead of splicing into the customer chassis harness. Academically there may be a problem here, because when you are done tuning, and return the car to running off of the stock narrowband sensor, there might be slight inconsistencies. More research/opinion is needed on this.
Ok, on to our budget options:
Innovate Motorsports:
http://www.innovatemotorsports.com/
New to the market, very competitive pricing/feature list. Uses the new, cheap LSU4 sensor. Has a patent-pending calibration routine for the sensor that none of the other companies can lay claim to. Integrated LCD for displaying values. Programmable outputs (narrowband out, wideband out, whatever you want), comes with a datalogging suite, that lacks only RPM pickup at this time, and is soon to come). It's a little too big to mount, it's more of a tuner's device, but it can easily be tucked away, and use the narrowband output to drive a A/F gauge.
AEM UEGO:
http://aempower.com/product_ems.asp
Uses the BOSCH LSU4, carries the AEM name and reputation. It can control 2 wideband sensors, for V-6 or V-8 people, or any setup with 2 O2 sensors. It does not have an internal LCD, so you need to pass the output voltages to a standalone fuel managment, or to the ecu, or to an A/F gauge or to whatever datalogging setup you have. Outputs are not scriptable, they are pre-defined.
PLX-devices:
http://www.plxdevices.com/index.htm
PLX-devices is hopping on the band-wagon and adding a product to support the LSU4 sensor, their M-250 or M-300. They offer controllers with/without LCD, letting you choose your pricing option. Wideband and narrowband outputs, not scriptable. They also have a VERY helpful website, with alot of info to aid in your research, and really help you understand this topic, thanks PLX!
DIY-WB:
http://wbo2.com/
The Tech-Edge/ DIY-WB project are a bunch of very talented hobbyist who set out to build their own wideband, shocked at the prices of the FJO/MOTEC offerings. They have had an offering on the market, longer than any of the other companies presented here. They offer kits that you can assemble yourself, or pay to have assembled, they will even sell you JSUT the circuit board, and let you source all the components your self, for the real real cheapskate :cough: hobbyist. I'm going to focus on the TechEdge v2.0 because it uses the LSU4 sensor, where the TechEdge 1.x used the L1H1 sensor. 3 Inbuilt analogue logger inputs (0 to 5 Volts), 3 thermocouple (K-type) inputs and RPM input. In addition to the inputs, you have the standard narrowband and wideband outputs. Comes with a logging suite, and POSSIBLY scriptable outputs(?) info here: http://wbo2.com/sw.htm. The company also has options for LED display outputs. Altogether a very well thought out, robust product.
I'm not going to gather prices at this time. prices are available from all the URLs above, except for AEMPOWER, who'd I'd reccomend checking out ks-motorsports.com .
You are in general looking at sub 400 dollar solutions, and if you feel like assemblig the DIY-WB / TechEdge kit, you're probably looking at like 250-300 dollars.
Here are some usefull links:
http://www.g-speed.com/pbh/afr-o2.html
http://www.plxdevices.com/appnotes.htm
http://hondata.com/techwidebandtuning.html
https://www.parts.com/shopping...d%3D1
I really want to keep this thread down in size, so let's keep the chatter to a minimum unless they absolutely further the discussion of this topic. If I ask you to delete a post, please just do so, thank you.
-PHiZ
Traditionally you had two options for a wideband/lambda O2 meter. These were the MOTEC unit and the FJO offering. These can cost you $600-1000 and up, so I'll be focusing on cheaper solutions.
The new Bosch LSU4 is a windfall to the community because it is OEM equipment on some VWs and can be had for between 30 and 60 dollars. Previously your options were generally the NGK L1H1 and the older BOSCH UEGO sensor (LSM-11?)
What is a narrowband output?
Narrowband is what your stock O2 sensor is giving you, it is of the range 0-1volts, so there is not very much room for resolution or "accuracy." Also it was engineered to save costs, and really only tells you if you are above or at stoich (14.7:1 A/F). This is not accurate enough for tuning.
Pic: http://plxdevices.com/M-200/Na...h.jpg
What is a wideband output. A more complicated 02 sensor element is used, and it can give you more usable resolution, from 0-5 volts. It was also engineered to be accurate, re-calibrateably on the fly, and with less emphasis on making a mass-produced economical unit. A wideband needs a special circuit and power source to control it's delicate heating needs. This is the "wideband controller", or controller box, that you see advertized.
pic: http://www.plxdevices.com/M-20...h.jpg
How can I make use of this:
I see two main options.
Have a bung tapped into your downpipe for a second permanent O2 sensor mount. If you are planning on running the unit in the car full time. Have the ecu running off the stock O2 sensors narrowband output, and do tuning via your dedicated wideband O2 sensor and controlling unit. Once tuned, you can remove the wideband O2 sensor, and use a plug to seal the bung.
The second method is more complicated, but it is more desirable for someoen like myself that uses the wideband portably to tune different cars. You remove the stock O2 sensor unit, and put the wideband sensor in it's place. Then you feed a narrowband output off of your wideband O2 sensor controller to satisfy the ecu. (The narrowband output off the wideband controller, is just the wideband info scaled down to 0-1volts.) For ease of instalation, you can have an OBD1-OBD1 "conversion/crossover" harness, instead of splicing into the customer chassis harness. Academically there may be a problem here, because when you are done tuning, and return the car to running off of the stock narrowband sensor, there might be slight inconsistencies. More research/opinion is needed on this.
Ok, on to our budget options:
Innovate Motorsports:
http://www.innovatemotorsports.com/
New to the market, very competitive pricing/feature list. Uses the new, cheap LSU4 sensor. Has a patent-pending calibration routine for the sensor that none of the other companies can lay claim to. Integrated LCD for displaying values. Programmable outputs (narrowband out, wideband out, whatever you want), comes with a datalogging suite, that lacks only RPM pickup at this time, and is soon to come). It's a little too big to mount, it's more of a tuner's device, but it can easily be tucked away, and use the narrowband output to drive a A/F gauge.
AEM UEGO:
http://aempower.com/product_ems.asp
Uses the BOSCH LSU4, carries the AEM name and reputation. It can control 2 wideband sensors, for V-6 or V-8 people, or any setup with 2 O2 sensors. It does not have an internal LCD, so you need to pass the output voltages to a standalone fuel managment, or to the ecu, or to an A/F gauge or to whatever datalogging setup you have. Outputs are not scriptable, they are pre-defined.
PLX-devices:
http://www.plxdevices.com/index.htm
PLX-devices is hopping on the band-wagon and adding a product to support the LSU4 sensor, their M-250 or M-300. They offer controllers with/without LCD, letting you choose your pricing option. Wideband and narrowband outputs, not scriptable. They also have a VERY helpful website, with alot of info to aid in your research, and really help you understand this topic, thanks PLX!
DIY-WB:
http://wbo2.com/
The Tech-Edge/ DIY-WB project are a bunch of very talented hobbyist who set out to build their own wideband, shocked at the prices of the FJO/MOTEC offerings. They have had an offering on the market, longer than any of the other companies presented here. They offer kits that you can assemble yourself, or pay to have assembled, they will even sell you JSUT the circuit board, and let you source all the components your self, for the real real cheapskate :cough: hobbyist. I'm going to focus on the TechEdge v2.0 because it uses the LSU4 sensor, where the TechEdge 1.x used the L1H1 sensor. 3 Inbuilt analogue logger inputs (0 to 5 Volts), 3 thermocouple (K-type) inputs and RPM input. In addition to the inputs, you have the standard narrowband and wideband outputs. Comes with a logging suite, and POSSIBLY scriptable outputs(?) info here: http://wbo2.com/sw.htm. The company also has options for LED display outputs. Altogether a very well thought out, robust product.
I'm not going to gather prices at this time. prices are available from all the URLs above, except for AEMPOWER, who'd I'd reccomend checking out ks-motorsports.com .
You are in general looking at sub 400 dollar solutions, and if you feel like assemblig the DIY-WB / TechEdge kit, you're probably looking at like 250-300 dollars.
Here are some usefull links:
http://www.g-speed.com/pbh/afr-o2.html
http://www.plxdevices.com/appnotes.htm
http://hondata.com/techwidebandtuning.html
https://www.parts.com/shopping...d%3D1
I really want to keep this thread down in size, so let's keep the chatter to a minimum unless they absolutely further the discussion of this topic. If I ask you to delete a post, please just do so, thank you.
-PHiZ
10-02-2003, 12:00 AM
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Re: These are your wideband options (PHiZ)
Went Techedge 2.0 and never looked back 
It's a lot less expensive than the innovate compared to the features of the techedge you would have to spend 525 total with there cable kit just to get the features of the techedge. Plus its fully capable now, which was a major decision maker for me. The onboard logging will be available soon also. Just add the chip and a switch and your set.
Nice write up though
It's a lot less expensive than the innovate compared to the features of the techedge you would have to spend 525 total with there cable kit just to get the features of the techedge. Plus its fully capable now, which was a major decision maker for me. The onboard logging will be available soon also. Just add the chip and a switch and your set.
Nice write up though
10-02-2003, 12:32 AM
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Re: These are your wideband options (nevin)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nevin »</TD></TR><TR><TD CLASS="quote">
I allways assumed that people that ran wbo2 left it in their car and used it as an a/f gauge. Am I wrong? Nice thread btw! </TD></TR></TABLE>
some do, some don't. I've had my techedge 1.0 in my car for almost two years now non-stop.
I allways assumed that people that ran wbo2 left it in their car and used it as an a/f gauge. Am I wrong? Nice thread btw!
</TD></TR></TABLE>some do, some don't. I've had my techedge 1.0 in my car for almost two years now non-stop.
10-03-2003, 06:56 PM
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Re: These are your wideband options (Ricey McRicerton)
I'm looking at buying the Innovative Motorsports one this week, this looks like a great device and the fact that it is portable rocks. A local guy is going to chip in with me so we can tune his turbo scoob. What's the deal with it lacking RPM pickup? Does anyone have any review of this device or any screen shots of their software? Thanks
10-03-2003, 10:28 PM
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Re: These are your wideband options (PHiZ)
Just to let you know, the AEM uses a Bosch sensor that you cannot buy except through AEM, it is not the same sensor used in other OEM applications. AEM is currently backordered on sensors, and they conveniently don't tell people that it is not the off the shelf Bosch unit. It's still a great product at a great price, but people need to know that they cannot go to any Schucks and pay $30 for a Bosch VW WBO2 sensor. I have the FJO WBO2 w/ LCD in my Integra and I have it mounted permanently in my dash, its an invaluable monitoring/tuning tool for a turbo daily driver. It is incredibly well built, designed to take massive amounts of abuse without batting an eye. I run the AEM EMS, so I do not have any other O2 sensors besides my FJO's NTK sensor. Sounds like you are in need of something that can work in conjunction with the stock ECU, so that leaves the FJO out, although the high price tag already excluded it it from evaluation 
If you have some cash to burn, I highly recommend the FJO setup. You mentioned a good point, that you may tune a car to a proper AFR but that it will not be accurate or consistent over time. After struggling for quite some time to get my EMS to accurately read my FJO signal, I realize it is not as simple as plug and play, at least in the FJO's case. Your choice of grounding locations will play a large role in its output, depending on how the WBO2 is designed, you should purchase one that has been proven to be very unaffected by various grounds. My FJO's LCD display is very good about this, I can experiment with various grounds and my LCD always reads dead on, however my output signal varies by a large degree depending on where the ground is and what accessories are running. So if you plan on tuning other people's cars, choose a WBO2 wisely.
If you have some cash to burn, I highly recommend the FJO setup. You mentioned a good point, that you may tune a car to a proper AFR but that it will not be accurate or consistent over time. After struggling for quite some time to get my EMS to accurately read my FJO signal, I realize it is not as simple as plug and play, at least in the FJO's case. Your choice of grounding locations will play a large role in its output, depending on how the WBO2 is designed, you should purchase one that has been proven to be very unaffected by various grounds. My FJO's LCD display is very good about this, I can experiment with various grounds and my LCD always reads dead on, however my output signal varies by a large degree depending on where the ground is and what accessories are running. So if you plan on tuning other people's cars, choose a WBO2 wisely.
10-04-2003, 10:24 AM
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Re: These are your wideband options (mskibbz-T)
Yes what you say does appear to be accurate about the sourcing of the AEM UEGO sensor. http://forum.aempower.com/bbs/viewtopic.php?t=4684
I'm thinking the FJO is kinda overkill for a permanent install, but at the time, it really was one of the only options. Dyno guys I'm guessing don't have the problem of groudning, as I'm guessing they're using a fully external voltage/ground source.
While verifying your claims I came across some interesting info, apparently all the widebands slowly come out of calibration, and the internal calibration routine from bosch is a little squirrelly. The innovate unit has a patent pending methodology for re-calibration that no-one else can lay claim to. But the product is really to new to know if it works...
Also a short word on the connectors of the various sensors. There is a laser-etched resistor in the connector of the sensors that is tuned to the characteristics of each sensor, so splicing plugs if you need a different shape, is out of the question...
-PHiZ
I'm thinking the FJO is kinda overkill for a permanent install, but at the time, it really was one of the only options. Dyno guys I'm guessing don't have the problem of groudning, as I'm guessing they're using a fully external voltage/ground source.
While verifying your claims I came across some interesting info, apparently all the widebands slowly come out of calibration, and the internal calibration routine from bosch is a little squirrelly. The innovate unit has a patent pending methodology for re-calibration that no-one else can lay claim to. But the product is really to new to know if it works...
Also a short word on the connectors of the various sensors. There is a laser-etched resistor in the connector of the sensors that is tuned to the characteristics of each sensor, so splicing plugs if you need a different shape, is out of the question...
-PHiZ
10-19-2003, 07:34 PM
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Re: These are your wideband options (PHiZ)
Well this should be interesting to find out if AEM sensors do infact plummet in price....
How often should you need to replace the sensor?
How often should you need to replace the sensor?
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10-19-2003, 08:42 PM
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Re: These are your wideband options (integra-modder)
I'm using the Techedge 1.5 (and it stays in my car permanently). I did not like the fact that the "little grey box" that controls it has to be adjusted. Do any of these other systems have to be adjusted?? If so, are they rotary ***** like in the Techedge, which I will be checking on at least once a month to make sure they are not rotating out of what they are supposed to be adjusted to. Also, the narrowband output is a nice feature on this WB02
11-05-2003, 09:37 PM
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Re: These are your wideband options (a z n t a k)
I'm running the DIY-WB, and it performs exactly the same as the FJO unit (except without the display screen). I've got it hooked up to Hondata...and for 30bucks + sensor, u can't beat it.
11-05-2003, 11:19 PM
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Re: These are your wideband options (XES)
So is there a downside to actually leaving the wideband o2 sensor in for daily driving? I want to keep it in and be able to keep an eye on widebad o2 readings.
thanks
Rob
thanks
Rob
11-05-2003, 11:35 PM
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Re: These are your wideband options (XES)
So can you leave the wideband always connected, the guy at the dyno charged me like 100 bucks to use their wideband, said oh after like a 100 uses its not good anymore B.S if you ask me. So if I have a wideband hooked up I can tune my vafc on my turbo engine myself??
Also for the tech edge wideband which one would I buy that would be the most cost efficient?? I dont know about you guys but im hella confused on there site
Also for the tech edge wideband which one would I buy that would be the most cost efficient?? I dont know about you guys but im hella confused on there site
11-06-2003, 05:55 AM
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Re: These are your wideband options (TurboTeG4)
Well the O2 sensors do lose accuracy after constant use. Depending on which unit you have, and if it uses the cheap LSU4 unit, you might not care. (30 dollars an O2 sensor is CHEAPER than replacing your narrowband!)
Additionally the innovate unit has built in calibration features to compensate for degradation over time
On the wbo2.com site. there are two sensor choices they refer to them as the 6066 and the 7057.
It looks like the two sensor have different cables.
The 6066 is the one that techedge will sell you the 7057 is the cheap VW replacment part.
So really the only things you would be adding to the basket are:
The techedge unit itself assembled or not assembled, and for either the 6066 or 7057 sensor
A 6066 sensor if you go that route.
Maybe a display
Maybe a longer cable.
That's it....
-PHiZ
Additionally the innovate unit has built in calibration features to compensate for degradation over time
On the wbo2.com site. there are two sensor choices they refer to them as the 6066 and the 7057.
It looks like the two sensor have different cables.
The 6066 is the one that techedge will sell you the 7057 is the cheap VW replacment part.
So really the only things you would be adding to the basket are:
The techedge unit itself assembled or not assembled, and for either the 6066 or 7057 sensor
A 6066 sensor if you go that route.
Maybe a display
Maybe a longer cable.
That's it....
-PHiZ
11-06-2003, 10:55 AM
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Re: These are your wideband options (PHiZ)
Awesome post Phiz Im gonna add it to my favorites and definitely use it when a wideband vs. narrowband question comes up. As for me I think im sold on the innovative unit. When will the data-logging be able to track RPM's?? Anyone know?? Again great info
Im gonna add it to my favorites and definitely use it when a wideband vs. narrowband question comes up. As for me I think im sold on the innovative unit. When will the data-logging be able to track RPM's?? Anyone know?? Again great info
11-06-2003, 11:16 AM
#15
Re: These are your wideband options (TeStUdO)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TeStUdO »</TD></TR><TR><TD CLASS="quote">When will the data-logging be able to track RPM's?? Anyone know?? Again great info </TD></TR></TABLE>
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Innovate Website »</TD></TR><TR><TD CLASS="quote">Auxiliary Input Cable #2 is identical to the standard auxiliary input cable, except that it includes a circuit for capturing RPM with inductive pickup from Cyl. 1 spark plug wire (0-10,230 RPM). This cable is slated to be available by October 15th, and is targeted to sell for apprx. $99 (subject to final product release).</TD></TR></TABLE>
I believe the last time I talked to them they were actually scheduling a release around New Year's.
</TD></TR></TABLE><TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Innovate Website »</TD></TR><TR><TD CLASS="quote">Auxiliary Input Cable #2 is identical to the standard auxiliary input cable, except that it includes a circuit for capturing RPM with inductive pickup from Cyl. 1 spark plug wire (0-10,230 RPM). This cable is slated to be available by October 15th, and is targeted to sell for apprx. $99 (subject to final product release).</TD></TR></TABLE>
I believe the last time I talked to them they were actually scheduling a release around New Year's.
11-06-2003, 11:27 AM
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Re: These are your wideband options (TeStUdO)
The last I heard (about a couple weeks ago) they had sent out units for testing and if the users don't report any problems they should be out in a few weeks (so about now).
But the last last time I asked them, about a month ago, they said they were coming out about two weeks ago.
So in conclusion, I have no idea but I think/hope it's sometime soon.
But the last last time I asked them, about a month ago, they said they were coming out about two weeks ago.
So in conclusion, I have no idea but I think/hope it's sometime soon.
11-06-2003, 03:14 PM
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Re: These are your wideband options (TeStUdO)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TeStUdO »</TD></TR><TR><TD CLASS="quote">Awesome post Phiz Im gonna add it to my favorites and definitely use it when a wideband vs. narrowband question comes up. As for me I think im sold on the innovative unit. When will the data-logging be able to track RPM's?? Anyone know?? Again great info </TD></TR></TABLE>
it graphs rpm vs. a/f as is now...
Rob
Im gonna add it to my favorites and definitely use it when a wideband vs. narrowband question comes up. As for me I think im sold on the innovative unit. When will the data-logging be able to track RPM's?? Anyone know?? Again great info </TD></TR></TABLE>it graphs rpm vs. a/f as is now...
Rob
11-06-2003, 06:22 PM
#19
What is this crap?
Re: These are your wideband options (m R g S r)
i am running techedge 1.0 with the old L1H1 sensor - which is, of course, the 92-95 honda civic VX wideband o2 sensor for that anemic lean-burn engine.
i've only rarely heard of people having to replace these sensors after very high mileage. so i expect mine to last 75k miles without issues, provided its cared for properly and the controller box doesnt somehow screw up and fry it.
anyone disagree with me?
i've only rarely heard of people having to replace these sensors after very high mileage. so i expect mine to last 75k miles without issues, provided its cared for properly and the controller box doesnt somehow screw up and fry it.
anyone disagree with me?
11-06-2003, 06:32 PM
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Re: These are your wideband options (falconGSR)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by falconGSR »</TD></TR><TR><TD CLASS="quote">i am running techedge 1.0 with the old L1H1 sensor - which is, of course, the 92-95 honda civic VX wideband o2 sensor for that anemic lean-burn engine.
i've only rarely heard of people having to replace these sensors after very high mileage. so i expect mine to last 75k miles without issues, provided its cared for properly and the controller box doesnt somehow screw up and fry it.
anyone disagree with me?
</TD></TR></TABLE>
I was thinking the same thing, seeing how it is original equipment and all.
What is there to know about warm up and this sensor? I keep hearing conflicting information.
Rob
i've only rarely heard of people having to replace these sensors after very high mileage. so i expect mine to last 75k miles without issues, provided its cared for properly and the controller box doesnt somehow screw up and fry it.
anyone disagree with me?
</TD></TR></TABLE>
I was thinking the same thing, seeing how it is original equipment and all.
What is there to know about warm up and this sensor? I keep hearing conflicting information.
Rob
11-06-2003, 07:34 PM
#22
Honda-Tech Member
Re: (hoggy)
umm....coming from a future Electrical Engineer here... y cant we just build a circuit to read the O2 sensor's outputs? when i think about it, all we need to do is design a circuit, using ANDS, NORS, ORS, ETC...... and using some chips, burn it onto the chips, and we can easily make this device.
im not sure on what the O2 sensor needs as input/output circuit wise. all this circuit needs to do is read the output from the O2 sensor and display some numbers right??? we know that the O2 sensor will send back a signal in Voltage and we can build a chip to display the A/F using the voltage signal. and using the Wideband O2 sensor's data from the graph above, we can output the A/F. any computer engineers out there!!!!????
im not sure on what the O2 sensor needs as input/output circuit wise. all this circuit needs to do is read the output from the O2 sensor and display some numbers right??? we know that the O2 sensor will send back a signal in Voltage and we can build a chip to display the A/F using the voltage signal. and using the Wideband O2 sensor's data from the graph above, we can output the A/F. any computer engineers out there!!!!????
11-06-2003, 07:49 PM
#24
Join Date: Jul 2002
Location: Chicago burbz, il, USA
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Re: (D21X)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote »</TD></TR><TR><TD CLASS="quote">all this circuit needs to do is read the output from the O2 sensor and display some numbers right???</TD></TR></TABLE>
It's not close to as easy as you are making it seem. Please don't expect that the o2 sensor has a simple voltage output just from sitting in an exhaust stream. There are many complicated aspects including heater control and ion pump. It's a sensor controller, not voltage reader. You really have to have a great understanding of the sensor as well...simply knowing electronics doesn't seem to cut it. As you will find, it's very difficult to get a good circuit using even a group of great EE's. (as in diy-wb)
It's not close to as easy as you are making it seem. Please don't expect that the o2 sensor has a simple voltage output just from sitting in an exhaust stream. There are many complicated aspects including heater control and ion pump. It's a sensor controller, not voltage reader. You really have to have a great understanding of the sensor as well...simply knowing electronics doesn't seem to cut it. As you will find, it's very difficult to get a good circuit using even a group of great EE's. (as in diy-wb)
11-07-2003, 06:21 AM
#25
What is this crap?
Re: (true)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by true »</TD></TR><TR><TD CLASS="quote">You really have to have a great understanding of the sensor as well...simply knowing electronics doesn't seem to cut it. As you will find, it's very difficult to get a good circuit using even a group of great EE's. (as in diy-wb)</TD></TR></TABLE>
yeah when i was building it and it got to the Ip Sense and the current pump, i was like okaaaayyy whatever you say mr. australian guy. i was ok up to there but thats when i just went on faith. the rest of the circuit, heater controller etc was simple enough for me to comprehend when i was building it.
D21X gets credit for the enthusiasm though.