From another software company.
http://i.imgur.com/entO1Ih.jpg
That description is inaccurate for the 2011+ Mechanical returnless. It is accurate for the older Fords that had a similar system.
Eric Brooks
HP Tuners, LLC
...
Now that I know the fuel system and injectors are setup correctly, I'm trying to get the MAF transfer as accurate as possible. I am logging with SCT Livelink, which logs in frequency. I convert the frequency to time in order to know which cells to adjust.
I am doing idle/rev logs at the moment, using inverted STFT average to find correction factor. If I understand correctly, a STFT below 1 means lean and above 1 means rich. My logs show that I'm between 9% and 21% lean from periods 525 to 288. Up to 288, the LTFT was steady at 1 and at 277 it starts running below 1 and at the same point my STFT starts to run about 7% rich.
Is this where the pcm starts making corrections with LTFT based on STFT readings?
I have not put many miles on the tunes after loading. Should I put more time/miles on the tune to let the PCM make adjustments with adaptive learning or is it better to make the adjustments immediately after loading tune?
So a .95 STFT and .95 LTFT mean the same thing? Both are 5% rich? This is only on Coyote?
Last edited by txcharlie; 03-06-2015 at 01:25 PM.
Thanks Witt! I've learned a lot from all the help I've received on this forum. I hope I can learn enough to help someone else out one day. But at this point, I'm very NEEDY....