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Old 08-01-2020, 01:00 PM   #1933
Compelica
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Originally Posted by Compelica View Post
Appreciate the feedback. Just switched to full DI to 7200 RPM as per your recommendation to others; will report back. I'm aware of the less cleaning ability on 100% DI but I'm putting it on to test.
Got some logs after driving for about 165 KMs.

https://datazap.me/u/compelica/v1?lo...=17&mark=10278

Some observations:

1. AFR runs richer (was at 11.6 at 20% PI, now it's 11.4 at full DI above 5200 RPM range for range)
2. FLKC at -2 and -3 are now -.6 and -2 for the same rpm range (I'm assuming it's due to the charge cooling of additional DI but it could be the additional fueling as well?)
3. For the same rpm ranges (3200 to 5200), why am I seeing different LTFTs between two versions With 20% PI I'm seeing -1.79 but with full DI it's 0.3. Keep in mind that both tunes use 100% DI at that point. I'm assuming it should be the same since nothing was changed?

Also how can I determine if fuel trims are fully learnt? Right now my conclusion for the richer AFRs is that trims aren't fully learnt yet, but thoughts?
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