Cascade Crew

iansane · Posted: Mon Jan 21, 2008 8:14 pm Post subject: Can I...

...split the signal coming from a wideband? Like, I've got the wire coming from the Innovate LC-1 and I'd like to send it to the '730 and an LCD gauge on the dash. How can I?

Dewey316 · Posted: Mon Jan 21, 2008 8:24 pm Post subject:

According to inovatives documents. There should be 2 anolog outputs. The yellow and brown wires are both anolog outs. Don't split the signal, you want to make sure the ECU gets a good input. That is what the second output from the LC1 is for, you can use that for the gauge.

In their manual, they show hooking the gauge up to analog #1, and the ECU up to analog #2. FWIW.

iansane · Posted: Mon Jan 21, 2008 8:29 pm Post subject:

Yeah, I've seen the two outputs, and you can program for whatever but I'd like to put the wideband in place of the stocker and have in simulate a NB, which it's programmed to do right off the bat. Still possible? Or can I set the '730 to kick an output for the gauge?

Dewey316 · Posted: Mon Jan 21, 2008 8:33 pm Post subject:

I am not sure what you are asking. The 2nd output from the LC1 will output what you need for the gauge, it is going to be the exact same signal that the output 1 is giving to the ECU. You want to leave the signal the ECU is getting alone, so that you make sure it gets a good signal, and the voltage, etc that it is expecting.

--John

iansane · Posted: Mon Jan 21, 2008 8:38 pm Post subject:

From the documents I have on the LC1, out of the box there is one wire set up for a traditional wideband signal and one wire set up as a narrowband simulation. I'd like to use both and get rid of my stock o2 so I don't need to yank a header and weld another bung. But in doing this, I'd need to split the wideband signal. Am I making this too complicated for myself and I should just put in the wideband on the passenger header?

Twilightoptics · Posted: Mon Jan 21, 2008 9:45 pm Post subject:

Use the Brown wire programmed with proper O2 voltage vs AFR IN THE LC-1 software, to run your LCD.

Use the Yellow wire to go straight to the ECM.

iansane · Posted: Mon Jan 21, 2008 10:15 pm Post subject:

I thought the yellow wire was the simulated narrowband?

Twilightoptics · Posted: Tue Jan 22, 2008 7:16 am Post subject:

It is. So it should go to your ECM.

You can actually program either to do either.

iansane · Posted: Tue Jan 22, 2008 7:19 am Post subject:

That's what I thought about the programmability, but then I don't have a wideband signal going through the ecm. That's why I was asking if I could split the signal?

Twilightoptics · Posted: Tue Jan 22, 2008 7:34 am Post subject:

Can the 730 accept a WB signal?

The voltages for WB and NB are different. If the 730 can't be calibrated properly to read the voltages from the WB, you need to hook the narrowband similation to it.

IE WB is like 0-5volts while NB is .5ishV=14.7

I would think you could just run two wires from the brown if that was the case. Parallel shouldn't change the reading.

blue89 · Posted: Tue Jan 22, 2008 7:47 am Post subject:

No, the 730 won't take the wideband signal. I did a bunch of research on the wideband o2's. The output voltage versus afr differ as well. nbo2's are NOT linear in function. They basically work for everything BUT 14.7 afr. Not to mention the voltage ranges are completely different as Twighlight suggested. Scaling the wbo2's 5V range down to 1V with a resistor divider won't work either.

If I were you, swap your NB for the WB, run the NB output from the LC1 to the 730 and the WB output to your AFR. The dynamic range of the wbo2 will make the display actually mean something.

Big PDF on wbo2 operation. Kinda neat cause they are actually xo2 sensors. IE, they count anything with o2 on it. CO2, NO2, O2, SO2. I think its cool at least. Rolling Eyes

http://wbo2.com/lsu/Y258K01005e03mar21eng.pdf

Twilightoptics · Posted: Tue Jan 22, 2008 7:52 am Post subject:

Narrowband should read nothing, other than 14.7. Not the other way around. That's what I've been lead to beleve. Stoich.

blue89 · Posted: Tue Jan 22, 2008 7:55 am Post subject:

There you go. 1V = rich, 0V = lean. AFR's ranges between the two output conditions, 1 afr. So from afr = 0 all the way to afr = 14 its 1V, and from 15 on up its 0V.

blue89 · Posted: Tue Jan 22, 2008 8:03 am Post subject:

Since the narrow band has such a weird output characteristic, the computer basically averages the time spent lean and rich. The nice thing about the wideband is that you CAN tune it to stay at stoich (14.7) cause it doesn't swing around that fast.

I also just noticed that the outputs are backwards! 0V on a wideband is rich, whereas 1V on the NB is rich. Interesting....

iansane · Posted: Tue Jan 22, 2008 4:51 pm Post subject:

My head hurts.

Okay. I don't seem to be explianing this very well. I realize that the signal is not the same between the WB and NB outputs. They're completely different, blah blah blah.

When I said I want to send the WB signal to the 730, I meant I just want to use it as datalogger so I can find I'm 16.7 AFR @ 1.4 TPS @ 70kpa or whatever it may be. I don't mean that I want the 730 to run off the wideband. That would be cool though!

However, I'd like to have a gauge on the dash that displays the current WB output so I can keep an eye on it just like every other gauge as a failsafe type of deal.

Now, normally people are just adding the WB sensor to their header and doing that. I however want to get rid of my stock o2 and have the WB simulate that signal. So basically have the o2 connected in two spots to the ecm. One for NB and one for WB. One for datalogging and one for the stock functions

The problem being that the gauge and "datalogger" (ecm) are both supposed to see a WB signal and I only have one output. Can I split that one with out any ill effects or am I barking up the wrong tree and wasting my time and I'll get a funky out put on one or both of the gauge and 'datalogger'

Dewey316 · Posted: Tue Jan 22, 2008 6:20 pm Post subject:

I think this is where you are confusing us. Really you want 3 outputs right? NB Sim into ECU, 0-5v WB to ECU, 0-5v to gauge. Did I get that right?

Twilightoptics · Posted: Tue Jan 22, 2008 6:23 pm Post subject:

I don't think you can log WB input through teh 730.

Log using the LC-1 software.

iansane · Posted: Tue Jan 22, 2008 7:22 pm Post subject:

Dewey316 · Posted: Tue Jan 22, 2008 7:24 pm Post subject:

is there another open ECU pin that you can plug an output through? I would not want to try to split the signal, I would worry your data would not be good.

iansane · Posted: Tue Jan 22, 2008 7:38 pm Post subject:

That's about the only thing that's stopped me so far. I don't know if or how I would have the ecm output the voltage though...