Quote:
Originally Posted by towndrunk
I reviewed some old logs and it appears the gains are about 3 to 5 mpg at 60 to 65 mph, depending on rpm. In other words, about 8 mpg at 1400-1600 and about 3 mpg at 1800 rpm. At 2000 rpm, little to no improvement. I think we could get by with a little less cam/spark at 1400 rpm since that tuning was done at 10°F, but no-one has tested that theory.
I'm sure gains would be much higher with a vehicle that doesn't have such a high load on it.
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Interesting and useful information.
Lean-burn is poorly understood by the lay and your work supports much of what has been only postulated on this forum. Thanks again.