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Hmm, this just got weird.
I got frustated of sudden power loss on more than half throttle, and started testing again basically from zero keeping it from hitting lambda correction limit:
Full throttle air mass flow showed 60-100mg/stroke more than previously.
After quick ignition timing optimizing, momentary fuel consumption was around 8l/100km at 100km/h ; stable.
Plus no random power loss.
Then reduced the IPW two times; on the last time it hit the maximum lambda correction and lost power. At full throttle shows again a lot less mg/stroke, and it's noticeable.
Cruising at 100km/h mg/stroke is also ~20mg/s higher = worse fuel economy, around 9-10l/100km and not stable.
So I have actually wasted a lot of time, just because of some odd safety mode.
Time for Speeduino.. maybe I'll see some actual gains and vanos/ignition map tuning actually makes some sense! And lean burn of course.
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