Aftermarket Wideband to Rear O2 signal

[pixel67]

Originally Posted by Sportsguy83

SOL.... Those a only two inputs available

😀 thought about putting both on an a/b switch and having one of my maps with both disabled. Or I can just move over one county where emissions aren't a factor and property taxes are a fraction of what they are here.

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[nelsmar]

Has anyone tried using the ground wire from the OEM rear AF sensor? There is a 12v power which you can use for wideband / flex fuel already, using the ground would make wiring wonderfully easy.

[AZFA20]

Originally Posted by pixel67

😀 thought about putting both on an a/b switch and having one of my maps with both disabled. Or I can just move over one county where emissions aren't a factor and property taxes are a fraction of what they are here.

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Interesting idea. The input could be switched between two different signals and then you would switch from one map to the other via cruise control for the correlating custom map. Suppose if you just set the min and max both to 0.1-4.9v (or whatever you want) you could still maintain the DTC associated with that one input just to have some diag if something goes wrong with that particular input (That's the way I like to set em up anyway). I would be curious to see how this worked in practice. I am also in need of an additional input so perhaps I will give this a go and see how it reacts to a switched input while running and switching maps.

[spitfire481]

Originally Posted by nelsmar

Has anyone tried using the ground wire from the OEM rear AF sensor? There is a 12v power which you can use for wideband / flex fuel already, using the ground would make wiring wonderfully easy.

The visconti v2 flex fuel kit uses power/ground/ecu input from the rear o2 plug for the flex sensor. Works fine on my car. Made for a real easy install. Just one connection to plug in on the car itself

[utekineir]

Now, assuming this was set up with plugs it could be reversible in a few minutes going back to the stock o2 sensor at inspection/emissions time right?

[Sportsguy83]

Originally Posted by utekineir

Now, assuming this was set up with plugs it could be reversible in a few minutes going back to the stock o2 sensor at inspection/emissions time right?

Correct.

[pixel67]

Originally Posted by utekineir

Now, assuming this was set up with plugs it could be reversible in a few minutes going back to the stock o2 sensor at inspection/emissions time right?

Yep, now I can only hope that my hi flow header cat is worth a shit.

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[Sportsguy83]

Originally Posted by welllam

Take a look at my attached log. If you look at max my voltage read is 4.19, while the target of the liftoff cruising should be 4.5 @ AFR 18 on gauge display. So it is 0.31V off. What about yours?

Took log tonight. Mine was at 4.49 V, so really on point.

[HRTROB]

Are you guys leaving the stock rear o2 sensor in place, or did you remove it so that you can hook up the wideband to that secondary o2 bung?

[Sportsguy83]

Originally Posted by HRTROB

Are you guys leaving the stock rear o2 sensor in place, or did you remove it so that you can hook up the wideband to that secondary o2 bung?

I have a third bung welded on my Overpipe for the Wideband O2 but you can remove the rear O2 and install your wideband O2 in its place.

[lbroskee]

Originally Posted by Sportsguy83

I have a third bung welded on my Overpipe for the Wideband O2 but you can remove the rear O2 and install your wideband O2 in its place.

U said that would give me issues even tho the o2 sniffer is disabled tho

[Sportsguy83]

Originally Posted by lbroskee

U said that would give me issues even tho the o2 sniffer is disabled tho

Not that it will give you issues, just that you need to disable a few more CELs but they will come up regardless as soon as you use the harness to connect your wideband.

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[xjohnx]

anyone know where one could find the male end of the secondary o2 harness to make for a plug and play install? Would like to tidy up some wiring and that would be a big help.

[Sportsguy83]

Originally Posted by xjohnx

anyone know where one could find the male end of the secondary o2 harness to make for a plug and play install? Would like to tidy up some wiring and that would be a big help.

It's a long shot, but Visconti and Moto Mike get them so they now where from... Now getting that info from them.....