Can you calculate AFR on a narrowband ECU?

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denniss112

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Audi TT 99' | 180+HP FWD

	Can you calculate AFR on a narrowband ECU? « on: October 26, 2021, 03:59:49 AM »

As the title says. Is it possible for a ME7.5 ECU that is narrowband, able to log some data so it can be calculated to a accurate AFR reading?

I will include a log I ran on my Audi TT MK1 180 FWD with a stage 1 tune + pop map on it.


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Sandstorm3k

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	Re: Can you calculate AFR on a narrowband ECU? « Reply #1 on: October 26, 2021, 02:04:52 PM »

No, logically thinking I don't think there is. Convert to wideband hardware


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ZpiXDK

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	Re: Can you calculate AFR on a narrowband ECU? « Reply #2 on: October 26, 2021, 03:52:17 PM »


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You want some tuning with that pop and bang?
-Nahh it’s not good for the engine

nyet

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	Re: Can you calculate AFR on a narrowband ECU? « Reply #3 on: October 26, 2021, 03:53:45 PM »

Quote from: denniss112 on October 26, 2021, 03:59:49 AM

Fundamentally, this is the reason for the two terms "narrowband" and "wideband".


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ME7.1 tuning guide
ECUx Plot
ME7Sum checksum
Trim heatmap tool

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex

denniss112

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Audi TT 99' | 180+HP FWD

	Re: Can you calculate AFR on a narrowband ECU? « Reply #4 on: October 27, 2021, 01:09:56 PM »

Quote from: nyet on October 26, 2021, 03:53:45 PM

Fundamentally, this is the reason for the two terms "narrowband" and "wideband".

I thought perhaps there would be a excel sheet somewhere floating with some magic calculations, you never truely know until you ask


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fknbrkn

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mk4 1.8T AUM

	Re: Can you calculate AFR on a narrowband ECU? « Reply #5 on: October 27, 2021, 02:17:23 PM »

Or google
It could be converted to afr but the range is .. narrow


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nyet

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	Re: Can you calculate AFR on a narrowband ECU? « Reply #6 on: October 27, 2021, 02:57:43 PM »

Quote from: fukenbroken on October 27, 2021, 02:17:23 PM

Or google
It could be converted to afr but the range is .. narrow

and completely inaccurate, to the point of being basically useless, depending on the particular narrowband setup.


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