Variations between wideband and neptune

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Variations between wideband and neptune

Txdragon Sat May 19, 2018 7:42 pm

I use an Innovate LC-2 wideband and they have a program, logworks 3.0 that you can use to monitor your AFR. All settings between the programs are the same for the wideband, but Neptune is a 1 point differing value. For instance, if logworks says 13.0, Neptune says 14.0. This is causing some confusion with tuning. Any input here?

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Coupe-r Sun May 20, 2018 8:11 am

In neptune how are you logging the wideband signal?

In logworks it reads the direct serial stream (digital)
Neptune can do this also if you set it to do so.

If you are using D14 o2 pin on the ecu, then you either have a BIG ground offset or your voltage vs afr table is wrong in neptune.

Just use direct serial in neptune Wink

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Txdragon Sun May 20, 2018 12:54 pm

Coupe-r wrote:In neptune how are you logging the wideband signal?

In logworks it reads the direct serial stream (digital)
Neptune can do this also if you set it to do so.

If you are using D14 o2 pin on the ecu, then you either have a BIG ground offset or your voltage vs afr table is wrong in neptune.

Just use direct serial in neptune Wink


Clarify for me please? Went through the settings and I didn't see anything that you mention here. Maybe I'm missing somethin. I do have it logging from the D14 pin, grounded to the ecu ground.

EDIT: Nevermind. It's in the dropdown box.. I found it lol

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Txdragon Sun May 20, 2018 2:46 pm

So update.. I logged a 2 minute operating temp idle in both programs and logworks shows an 11.78 average and Neptune reads mid-high 11s throughout. I would say this is a good test to show that they are, in fact, on par with one another. I theorize that the gauge display that shows my afr in logworks is just laggy when comparing neptune.

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HRTuning Sun May 20, 2018 3:47 pm

That's possible. At least you're much closer now!

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Txdragon Tue May 22, 2018 10:10 pm

Update update..

I had to set an offset in preferences. For any searches in the future, it is an Innovate LC-2 and the wideband offset was set to -0.48 Now everything is perfectly synched!

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Coupe-r Thu May 24, 2018 9:22 pm

log works is the ACTUAL air fuel from the sensor. Logging through d14 you open yourself up to ground offsets as you have found.

Why not use a serial to USB adapter from the lc-2?
Set Neptune wideband to read direct serial.

Then click “start direct serial”

Job done, no offsets no mucking around.

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