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Old 08-15-2012, 05:28 AM   #88
roger 04 rt OP
Beastly Adventurer
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Joined: Nov 2011
Location: Massachusetts
Oddometer: 2,371
Here is a graph that I plotted a few days ago after fully reseting my Motronic, settting the LC-1 to 13.5. It took several rides at many RPMs, gears and TPS positions to relearn the Adaptation Values. Here's the plot, made after a warm restart, meaning that the bike was at temperature and was back in Closed Loop quickly.

What you can see is that for the first 12 seconds (until the 2:27 mark) the bike is Open Loop. In that period there is the After Start Enrichment and Warm-up Enrichment--the up-slope that levels at 13.2. Then at 2:27 it snaps into Closed Loop at 13.5.

What is noteworthy about this plot is that the entire curve has been shifted down by 12% or said another way, the Motronic has added 12% more fuel to both Open Loop and Closed Loop--4% more fuel because I run E10 and 8% more because the LC-1 is programmed to 13.5:1.

If the Closed Loop learning had not been applied to Open Loop (and you can see where Open Loop starts after a Motronic reset in plots from earlier in this long thread, here), The Open Loop phase would have started about 8% higher at 13:1 and the pre-closed-loop plateau would be at about 14.3:1, then it would have snapped down to 13.5 for the Closed Loop phase.

For me, this pretty fully settles the question of Adaptation and whether the Motronic MA 2.4 has that ability or not. Sometime when I get a chance I'll also measure the WOT AFR to confirm Adaptation there as well, but as an Anti-Knock measure, it's just as important to have Adapted there so I don't expect any surprises.


PS: An IIce Air in the 30C position would be a good alternative.
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