Voltage not reading correct afr

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maych87
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Voltage not reading correct afr

Post by maych87 »

I am using my jimstim to test some outputs. I noticed that my wideband o2 voltage seems off. So I checked it. At 0v it should read 10 afr. It reads 10.1afr. Is that normal. If not how do I correct this. Attached is a picture of the calibrate afr table, afr gauge and exhaust gas oxygen voltage. As you can see it's set to 0v and is reading 10.1 afr.

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racingmini_mtl
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Re: Voltage not reading correct afr

Post by racingmini_mtl »

That's an artifact of the lag factor computation. If you set the Lambda lag factor to 100 (no smoothing), you will have the correct 10.0 at 0V. But you may then have a significant amount of noise on the AFR value.

Jean
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maych87
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Re: Voltage not reading correct afr

Post by maych87 »

Does smoothing only affect the gauge reading? Or does it also affect how the reading is interpreted in the fuel tables?


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racingmini_mtl
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Re: Voltage not reading correct afr

Post by racingmini_mtl »

It affects everything.
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maych87
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Re: Voltage not reading correct afr

Post by maych87 »

That does not give you a bad tune on the fuel tables? Is there a recommended lambda lag factor to set it to?


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