Fuel trim nooby q

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tadope

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	Fuel trim nooby q « on: July 22, 2021, 11:31:17 AM »

Hi. just need some clarification.
Do fuel trims do anything during WOT/open-loop operation?
I thought this was the way things worked, please correct me if i'm wrong? Huh

LTFT: take about 20 sec to kick in, and apply to idle and part throttle
STFT: act immediately idle/part throttle
open loop: only when the car can be at stoich/14.7, which is basically just idle
closed loop: anything outside 14.7 and primarily WOT

Is my knowledge correct? I'm wondering how to go about running the car for WOT after clearing codes?
does the ecu learn and apply any trims to WOT over time?


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nyet

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	Re: Fuel trim nooby q « Reply #1 on: July 22, 2021, 02:04:49 PM »

The FR answers all of your questions.


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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

tadope

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	Re: Fuel trim nooby q « Reply #2 on: July 22, 2021, 07:09:42 PM »

Woah. Ok


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