Wideband for MAFless tune

[Furly]

Running mafless currently and my new tuner suggested wideband.

Questions: do i simply remove the rear oxygen sensor and put a wideband sensor in place? My rear o2 is coded out for BT setup.

Also, which wideband do you guys recommend?
Thanks!

[MetalMan]

What is the purpose of this wideband? Simply for you to visually see AFR?
The stock primary O2 sensor is already a wideband, which a tuner should be using. Does he simply want you to keep an eye on AFR?

Depending on how the secondary O2 is coded out you might be able to remove it completely from the car. Some tuners only tune out the emissions-related functions, but the ECU would still expect to see the heater portion plugged in.

[Furly]

I guess since the rear o2 is coded out, it would be good to monitor visually. Not sure if its really necessary but multiple people have brought up the idea so i fugured if its beneficial why not.

[jesse500]

if rear 02 is turned off, and you remove it, you will still get P0036. unless you delete that too (like me).

[Seerlah]

Add a 3rd bung. Also use a heat sink, or you will burn your sensor out more than usual.

Innovate heat sink on third bung back for in-cabin AFR gauge, using AEM Uego on a dual VEI ditigal gauge. Should be more downstream...but it is what it is! I did not design it.

[MoparFreak69]

If you have a 1.8t your car already has a wideband. The ME7.5 used in the B6's were all wideband. Why would you pay to install an extra one when it's not needed?

[Seerlah]

Didn't see last inquiry. My Innovate LC-1 controller crapped out on me roughly 1 week after install. So...I don't recommend them. Though some swear by them. I suggest the AEM Uego. Install is up to you, because it is a rather unappealing (personal preference). Colors won't flow at all in your car. But you can try something like solder in new LED colors to match your interior. Warranty will of course be void after that. I run mine in an all black gauge with red display.

The Innovate brand I am sure treats others well, just as Garret does. Both these companies left a sour taste in my mouth, and never will I endorse them. Wasted a lot of my money. But if other's had good experience with them and you choose to run it, best of luck. Also know that these require a lot of calibration. My AEM...never needed it and never had an issue with it for years now. Oh yeah...purchased the AEM used and Innovate LC-1 brand new.

I do recommend the Innovate heat sink, though. Ebay has cheaper ones with different designs to them.

[EuroxS4]

It would make some sense to find a afr gauge and tapp into the front 02 sensor.

[Seerlah]

He would still need a controller. Sensor is the cheap part.

Forgot to add Innovate requires an annoying yearly calibration (only mentioned it)...let along initial calibration. With my AEM Uego, just hooked it up. Only calibration necessary was scaling of my gauge. With the Innovate you will need to do that and two more calibrations. One for atmospheric pressure, and another for something I can not remember. So now you are stuck with where to mount your calibration button.

Here is where I put mine (LED is part of the calibration), and now completely useless. Just a dummy button in an altered trim!

[EuroxS4]

He would still need a controller. Sensor is the cheap part.

Forgot to add Innovate requires an annoying yearly calibration...let along initial calibration. With my AEM Uego, just hooked it up. Only calibration necessary was scaling of me gauge.

controller is cheap!!!http://www.14point7.com/pages/products

[Seerlah]

Website saved to bookmarks

[Furly]

So if we already have wideband in a B6, can it be used with a gauge in the car? Or is a 3rd one necessary? I really dont want to remove my HFC and have a 3rd bung welded in. But if i have to i will.

[Seerlah]

Wire tap for controller reading, to controller, controller to gauge of choice. Different ways to go about it and you need to decide which route you want to take. I would first try a used setup on ebay. They are universal applications.

For example your rear o2 will most likely be coded out. Depending on the coding you can remove it completely or you may need to have it plugged in. Either way...you still have the rear o2 bung you can use if coded out. If you need it plugged in, that only means electronically. Keep it plugged in and zip tie to the side. Heater element will still work and will no doubt melt stuff and/or cause a fire. So place out of the way accordingly.

[Furly]

Sweet thanks mitch and everyone else. Will try that out.

Also check your pm mitch ! :)

[Human Garbage]

I put an AEM wideband in the rear O2 bung on my Jetta. Works great. As it has been stated the rear O2 must be coded out first or you will have codes thrown. Its just a bunch of CDxxx codewords and a change to ESKONF to disable the circuit diagnosis. Any tuner should be able to do it in minutes... Hell, I'm not a tuner and it took me that amount of time lol.

[Mr.Avant]

So, I was planning on purchasing the Podi AFR combo gauge w/ two displays. I see an innovate controller is optional equipment. Assuming podi provides the sensor, would I be smart to get a different controller? Is that even an option? I haven't read much about problems with the podi setup.

Is the heat sink recommended regardless of the controller/ sensor? Might grab one of those as well. Thankfully I had my new downpipe made w/ three 02 bungs. It's easy enough to plug one.

Sent from my SM-G920W8 using Tapatalk

[Seerlah]

The heat sink prolongs the life of the o2 sensor. Sensors have a heating element to them. This is used so they don't burn out so fast. When the engine starts, components are cold...combustion is not. The heater element is there so hot exhaust gases are not heating up the sensor, instead it's own design is. It's for longevity and I recommend it if none. You see mine in the pic above. Note...kind of pricey for what it is. Try and source it for cheap.

VEI is a brand, Podi is a distributor. Winston just chooses to run with them. Person from my section works for VEI them directly. With Winston, you get great customer service. He even walked me through scaling the VEI gauge, which I run and purchased through him, when I was basically lost. Very appreciative of that, and now I understand how to scale the guage.

The VEI gauge is also universal. For example, I run a VDO oil pressure sending unit on mine and an AEM Uego wideband o2 sensor. So to answer your question, you can run other brands. But...not all are compatible and you need to find out which ones are. Once again with customer service in regards with Winston, my VEI oil pressure sensing unit crapped the bed. I have the older version and the VEI no longer makes the sending unit I require. I inquired about a VDO sending unit. He personally contacted VEI for me to find out which VDO sending unit to use. Customer service and Quality Control is a big one for me, and Winston has that.

Off topic, I remember Winston from back in the days. He had a built B6 and started his company right here on AZ as a hobby on his B6 he eventually sold. Started as a mold just for him...and now it is what it is today. Seen it start from nothing and I recommend Winston and Podi. Never had one problem with his products (he handled each and every issue very professionally) and all issues were electronic issues he had no hand in designing. I run two dual VEI gauges.

1) Boost/Vacuum & AFR
2) IAT & Oil Pressure

Want to add a third for fuel pressure and EGT.

[Mr.Avant]

The heat sink prolongs the life of the o2 sensor. Sensors have a heating element to them. This is used so they don't burn out so fast. When the engine starts, components are cold...combustion is not. The heater element is there so hot exhaust gases are not heating up the sensor, instead it's own design is. It's for longevity and I recommend it if none. You see mine in the pic above. Note...kind of pricey for what it is. Try and source it for cheap.

VEI is a brand, Podi is a distributor. Winston just chooses to run with them. Person from my section works for VEI them directly. With Winston, you get great customer service. He even walked me through scaling the VEI gauge, which I run and purchased through him, when I was basically lost. Very appreciative of that, and now I understand how to scale the guage.

The VEI gauge is also universal. For example, I run a VDO oil pressure sending unit on mine and an AEM Uego wideband o2 sensor. So to answer your question, you can run other brands. But...not all are compatible and you need to find out which ones are. Once again with customer service in regards with Winston, my VEI oil pressure sensing unit crapped the bed. I have the older version and the VEI no longer makes the sending unit I require. I inquired about a VDO sending unit. He personally contacted VEI for me to find out which VDO sending unit to use. Customer service and Quality Control is a big one for me, and Winston has that.

Off topic, I remember Winston from back in the days. He had a built B6 and started his company right here on AZ as a hobby on his B6 he eventually sold. Started as a mold just for him...and now it is what it is today. Seen it start from nothing and I recommend Winston and Podi. Never had one problem with his products (he handled each and every issue very professionally) and all issues were electronic issues he had no hand in designing. I run two dual VEI gauges.

1) Boost/Vacuum & AFR
2) IAT & Oil Pressure

Want to add a third for fuel pressure and EGT.

Good to know, I may get in touch with podi to discuss my options.

I already have two analog gauges from them, but am ready for a wideband, and might as well step up to 4 displays.

Sent from my SM-G920W8 using Tapatalk

[Seerlah]

He sells a digital display designed for the b6 chasis. Pricey...but worth the cost. You must also understand preference if you never had a digital display. Numbers jump a lot and you should youtube videos in case you regret a purchase. In other words, first imagine a digital read out in your car and see if you will be able to tolerate it or not, coming from analog.

Unless you want the steering column podi, this is the way to go with Podi: http://www.podi.ca/audi-b6-b7-podi-v...ge-4-displays/

[5ktq]

You can't just tap into a wideband like you could with a narrowband (it doesn't output a voltage directly).

Wideband is pretty fancy, there's a reference cell and another cell in the exhaust, and the output is measurement of the current you put into the one cell, compared to the other one, times some calibration factor. Something along those lines anyway. Not very simple like narrowband.


Seems kinda silly to duplicate sensors the ECU already has.

[Seerlah]

^Another good thing to know. Just researched it and it seems to be done like that only on standalones. I personally don't see what is so bad about adding a 3rd bung. Next downpipe I have made will have like 5 of them (not even joking). lol