Setup:
2.7t AGB
630cc EV14 Bosch injectors
4bar FPR
95mm MAF (with new RS4 B5 MAF Sensor)
I scaled the MAF (MLHFM) with the program mafadjust.exe from the forum (from 81.5mm OEM RS4 B5 to 95mm)
I use the data for the injector from the manufacturer (similar to
https://www.finjector.com/documents/6450c9f86cb90/0280158123_Data.pdf)
When idling at 840 rpm, the system achieves an STFT of +25%.
When idling at 1440 rpm, the system achieves an STFT of +-4%.
I don't know why the STFT is so high at 840 rpm.
At 840 rpm, approx. 4g/s air mass is measured and the injection time is approx. 1.9 milliseconds.
At 1440 rpm, approx. 5.8g/s air mass is measured and the injection time is approx. 1.65 milliseconds.
I don't know why the mixture is richer with more air mass and less injection time. I would have expected exactly the opposite.
I don't know if I should correct the data for the injectors next or if I should correct the data for the mass air flow sensor.
How would you proceed?
I have calculated TEMIN according to
http://nefariousmotorsports.com/forum/index.php?topic=1531.msg14587#msg14587:
349cc / 705cc @ 3.5 Bar = 0.49504
TEMIN = 0.49504 * 0.8400ms = 0.41582ms
