AO

As many of you know the Innovate WBO2 sensor has 1 digital output and 2 analog outputs (analog 1 and analog 2).

I've been using analog 1 for my in-car AFR guage and analog 2 for the STer. But I've had some disparity between the two. Specifically, I'll see one value on the AFR guage (analog1), and a different value on the STer screen(analog 2).

I've checked the AFR curve through the LM programmer and they are the same.

I've also been able to correlate that the analog 2 (STer) seems to be identical to the digital output. Analog 1 (my AFR Guage) seems to be off quite a bit - like 2 ~2.5 on the lean side.

I'd like to determine if the guage is inaccurate or if there's something goofy with the analog 1 output.

Here's my question: Is there any reason why I shouldn't run both the STer and the AFR guage off the same analog output (namely analog 2)?

My initial thought is that it should be okay, but thought I'd ask the experts.

DR

Hi Andrew,

I am pretty sure that most gauges use a different "curve" than the ST. If both Analog outs are set to the same "curve" or "law" this will explain your issue.

Mike Frye

While you're waiting for the experts... (EDIT: Too late, DR is in the house )

Can you swap analog 1 and 2 and see if there's a difference in the logging?

That would tell you if it's the analog gauge or the output.

jcorenman

Andrew,

I think DR is on the right track here. What is the gauge that is connected to Analog-1? What voltage range is it looking for?

AO

I don't exactly recall, but I believe I have both set at 0v = 7.35 and 5v = 21.49 (or something like that) through the LM programmer.

If I should be using a different curve/law for my gauge, that would be really good to know.

AO

I don't know off hand. But DR should.

AO

BTW, this is the guage in question...

http://www.dynotunenitrous.com/store...?idproduct=171

DR

Andrew,

Gauge Law for that one is:

1 Volt = 10.00 A/F
2 Volt = 20.00 A/F

AO

Well... there's my problem right there.

Thanks DR.

Tony

Noob!

You in DTW next week Andrew?..i think im there on a layover THR?

DR

x2

AO

Nope. Sorry my friend. Work takes me to SE Ohio these days Mon-Fri. Only home Friday night through Sunday night. But don't let that stop you from calling me from time to time.