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Old 10-09-2013, 01:12 PM   #3 (permalink)
ever_green
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Join Date: May 2011
Location: Toronto
Posts: 264

gueff - '19 Mercedes Benz A250 4MATIC AMG
90 day: 30.55 mpg (US)
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i monitor my AFR...fuel enrichment starts at ~95% manifold pressure and I usually aim for 80%. its kinda hard to hit above 90% load without substantial throttle (I have a linear drive by wire map). timing is obviously lower under more load to prevent knock but I thought lower rpm would make up for that.
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