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I reset adaptations yesterday with INPA and at warm idle, LTFT was 0 and STFT was bouncing around -2.5%. I went for a 15 minute highway drive with some normal city traffic getting to the highway on each end. When I got back the LTFT was back to -8.1% and STFT shoving 7.5% back in.
At this point I thought possible fuel pressure so put a gauge on it and 54 PSI solid and dropping to 52 PSI when revving the **** out of it. So I am guessing the fuel pressure is within spec.
I also suspect a faulty VDO MAF although it is only 8 months old so I logged a steady state 3 or 4 minute run on the highway with cruise control set at 65 MPH. It appears the MAF follows the calculated load but I am still looking at data.
Last edited by Overboost; 04-17-2019 at 12:47 PM.
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