Hondata

If you disconnect the wire you connected to D10, do the readings change at all?

ill check and post later tonight.

before i re-do the wiring.... can you tell me exactly what to enter in the lamba conversion table. i know the help files kinda shows it but it looks different than the actually program. Thanks!!!

can u wire up the just the wideband o2 sensor to the s300 ? i ask this cuz i have a wideband sensor laying in my garage and was wondering if it can b of some use.. i dont have the controler r gauge.. just the sensor.. thanks

no you cant hook it up like that.....you have to have a controller for the wideband. then wire that to the s300

What values are you guys using on the voltage/lambda table with the AEM wideband. And also what offset?

I have p28 and PLX m300 wideband. I'm using d10 as wideband input and was having inconsistant readings untill i cut r136 and r138. Once I cut them it worked fine with no voltage offset needed.

When I cut them, I just cut one end of the resistor and pointed it up away from the board. That way I can solder them back into place if I ever wanted/needed to use eld in future.

just a point on this topic,

i tried connecting the LC-1 up to the ELD on my JDM P72 & the thing seemed to be consistently 1 full AF point out across the normal working range of the engine(i cant remember whether it was up or down).And no,there was def no installation errors or voltage offsets present.

So i just rerouted the LC-1 to the D12 EGR input & it came up perfectly.

This may or may not help some others out,but can anyone point out a reason for the discrepancy on the ELD input?

just to add to the thread,

p28 aem wideband
cut r136 &r138-------works. both read perfect

I am having the same issue, I have a Hondata P28 ECU with a built in OBD2B conversion.....What Pin on the OBD2B harness runs into Pin D10 on the OBD1 ECU???

A30. See help / reference / ecu connectors.

My factory OBD2B A plug doesn't have a wire going into slot A30, so I am under the impression I have to insert a pin into A30 and connect the wideband analog wire to that?? Is there a link or blown up image I can check to see the exact location of R136 and R138 so I will have to cut them??

Yes you have to add a wire with a pin. All the components are labeled inside the ECU.

ok I did that, and I am still not getting a proper reading, so I am routing the analog ground wire from the AFX to where I originally had it routed to....the neg terminal of the battery which is also what the AFX instructions sais to do....last week my tuner told me to route the ground wire to any sensor ground at the ECU, and I think that might be where I am going wrong.....Most guys here use ELD as the wideband input and cut the R136 and R138 , and they all have good reading in the end so this is my last resort in trying to fix this....

All grounds should go to the same place. With a B-Series engine this is the thermostat housing - the ECU & wideband should both ground to this point. Using the battery negative terminal creates a corrent loop.