The last time I looked at Mercury outboard spec sheet, the DI was down on
power -cleaner lean burn DI uses up some of your
vol eff and encourages stratified charge - NOTHING is all good good
Vance

Vance,
Good to see you bouncing back and I hope your feeling much better.

Thanks for that info - interesting point on reduced power and volumetric
efficiency, I don't quite understand why - perhaps the much greater atomised
charge takes up more area for less fuel?
However encouraging stratified charge is what I thought we were after - my
understanding of stratified charge was that there was a greater and more
dense charge surrounding the ignition point, which leads to better ignition
and burn of a leaner charge?
George ( down under)


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