xesvuli420

Ok so at first I just had my wideband go to my gauge, and a friend said since I have wideband and s300 then I would be stupid not to wire the analog output to my harness so when we tune we can take advantage of better readings.

He said find the o2 wire in my harness and cut it, then replace it with the 0-5 wire on my analog output.

I have 2 bungs on my DP, so I'll just plug one, and put the wideband in the other

So ok here I am, I'm in my floorboard, wires ready to be tied, and I can't find which one to replace.

I have a 96 integra SE, and a prosport wideband controller. Prosport says the brown 0-5 wire will go to the harness, the black wire will be ground, and the green 0-1 wire won't be used....

If so far all the above info is true... What wire do I cut to tie in the brown?!?

Please help... It will be appreciated!

Thanks!

bigmikeinteg

You have to check what kind of ecu and wire harness you have...ie OBD2A or OBD1 etc

Once you have done that check for a pinout diagram of the ecu/wireharness that you have and find the O2 wire
Attach your wire there
If you search on the Hondata website there is a write up there that you can follow.

BigMike0147

You don't have to cut anything in your harness. Depend on the ecu you're running, you'll need to just add a pin/wire into one of the plugs that go to your ecu. If you look it up, there should be instructions online for which port to use (actually multiple port options most likely). After you wire it in, you'd then set your S300 to look for the 0-5V signal in that designated port.

Also, leave your stock O2 sensor wired up. You might chose to tune with closed loop later on, and your stock narrowband O2 will allow you to do this easier.

I hope this makes sense. Just search how to wire in your wideband, and it should come up on google.

xesvuli420

I tried searching all I got was confused

I called prosport and they said to cut the wire as I won't be needing a 0-1 anymore

But they don't know what color wire to tie to

bigmikeinteg

What ecu do you have?

bigmikeinteg

You can connect to the ELD input on the ecu (pin D10 on OBD1) just ensure the ELD isnt connected anymore.

lsturbo33

It looks like you answered your question already. Run the brown wire to d10 on the ecu. Ground the black wire to the chassis. Do nothing with the green. When you hook up s300 you need to disable eld and calibrate a voltage to lambda conversion table.

xesvuli420

Eld? What's that?

How did I answer my own question??? Lol My question was what do I do with this bwn wire, can someone explain "why" to do it whatever way?

I like the idea of not killing my o2 sensor so if it will work using something else I'm cool with that just wanna understand what I'm doing

Sorry I'm so nooby and thanks!

lsturbo33

Eld is electrical load detector. You have to disable it in the s300 to be able to use the input for the wideband. The 0-5v brown wire coming out of the wideband controller needs to be connected to pin d10 at the ecu. Your won't mess up your o2 sensor installing a wideband.

xesvuli420

Awesome! Ok guys its done. D10 on the obd1 harness has been switched to the bwn wire from the controller.

I am about to sign on to hondata to disable eld.

Is there a way I can tell if I did it right without running the car? Or will I just have to wait?

Thank you guys so very very much! I couldn't have done this build without this forum and its members!!!


***update:
Ok so I found the paper that list the volt/lambda/gasoline AFR

I also loaded my map to compare. On the map it says...

Volt 0 5 5
Afr. 10 20 20

On my paper it has a table

Volt. Lambda. Gasoline AFR
0 .683 10.00

And goes to...

4.99 1.356. 19.98

So.... This look right to you guys? My tune guy said he could set up the values, but I'm trying to learn, and save him from having to do it at the same time... I want him to concentrate on a precise tune..


Thanks