question about STFT1 reading

[teders]

Recently installed the ktuner v2 on my 17 SI, and have been wondering about some of the data points. This might be kind of a noobish question, but is there a listing of what all of the acronyms mean? I was looking for a metric that showed if my fuel ratios were acceptable and just happened to find that STFT/LTFT was the exact metric i needed for this.

That being said, how should i read this? When i monitor STFT1 i get a reading that varies between -10% and +15% depending on if im accelerating or not. Then when i was looking at LTFT1 the reading was pretty much constantly -100%. Could someone direct me to some resource or literature that could help me decipher all of this?

Thanks

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[KTuner]

Recently installed the ktuner v2 on my 17 SI, and have been wondering about some of the data points. This might be kind of a noobish question, but is there a listing of what all of the acronyms mean? I was looking for a metric that showed if my fuel ratios were acceptable and just happened to find that STFT/LTFT was the exact metric i needed for this.

That being said, how should i read this? When i monitor STFT1 i get a reading that varies between -10% and +15% depending on if im accelerating or not. Then when i was looking at LTFT1 the reading was pretty much constantly -100%. Could someone direct me to some resource or literature that could help me decipher all of this?

Thanks

That's Short term and long term fuel trim. Long term 1 should not read -100 unless it's disabled and you don't have the ability to do so currently. LTFT1 does read correctly. I would assume you chose LTFT2 on accident, which will read -100 since you don't have two banks available.