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Originally Posted by Focus-Ak
On my UltraGauge the percentages are ephemeral since acceleration periods are usually brief, and are very sensitive to throttle position.
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The same for me. I go up to 90% MAP on pulses, about the same as 90% engine load. The results at 80% have not appeared nearly as good, based on trial & error while keeping close watch on the ultragauge trip average mpg.
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I also notice that, while accelerating, I need to progressively add bits pedal displacement to keep in my target %-load range.
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I saw a report that greater increase in fuel is triggered by quicker change in acceleration, so I've endeavored to sneak up on 90% MAP rather than going there instantly. However, I don't know if this makes any difference.