First and foremost the MC is NOT a weight loss diet on it's own. It is as the name implies a "CLEANSE" So caloric content is irrelevant in terms of function or how cleansing/fasting works.
While weight loss is a "side effect" of any form of cleanse/fasting. It does not work by the restriction of calories. Most toxins are stored in fat thus when "CLEANSING" fat loss is part of the process but not the main purpose or goal of ANY form of fasting. For more insights check out the FAQs. http://curezone.com/forums/fm.asp?i=265185#i
There is also the misconception of restricting calories on the MC makes for faster weight loss. The fact is that the more you restrict calories, the slower the metabolism gets thus making it more difficult to loose the weight and harder to get the metabolism back up after fasting to retain any weight you might have lost.
One of the unique things about the MC is that it provides nutritional and caloric support so it can be done while maintaining our regular daily lives and activity levels thus cutting back on the syrup could make for a more difficult time by not providing enough energy and nutritional support to function in our normal everyday lives and level of activity.
A good bit of maple syrup in the US comes from Canada so there should not be any difference in caloric contents. The grading system for maple syrup relates to the period of harvest and filtration and what changes mostly is mineral content thus the darker B & C grades are prefered for the nutritional support it provides when fasting.
Below is the "exact"conversions between the english and metric systems for the MC recipe.I'm sure that rounding off the exact measures would be just fine.