STFT

[johnzcarz]

Rule of thumb is that positive values means it’s adding fuel (so it’s running lean), negative values means it’s taking fuel away (running rich).

Topic

[ytram]

When in the minus, it is trying to pull back on fuel or give less. Positive of course would be trying to give extra.

[dreamer2355]

Here is a (long) video by Scanner Danner regarding LTFT and STFT -_x000D_
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http://www.youtube.com/watch?v=oRX2V6_a3dc&feature=plcp

[toyodagreg]

usually short term fuel trim(stft) is not as important as long term fuel trim(ltft) look at your long term to terermine how the engine runs. short term changes constantly, that video is good explanation.

[oilythumb]

Thank you all for your help, I don’t think I get confused AGAIN

[EricTheCarGuy]

Quoted From dreamer2355: _x000D_
_x000D_
Here is a (long) video by Scanner Danner regarding LTFT and STFT -_x000D_
_x000D_
http://www.youtube.com/watch?v=oRX2V6_a3dc&feature=plcp

_x000D_
_x000D_
+1 for awesomeness but the short of it is, if it’s positive it’s addin

[Author]

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