I posted this on my e-trike thread but those who aren't interested in that subject will have missed it. I had Harlan re-program my 2013 SPORT mode system to 0% regen with no brake light and 15% with light. Then I iPod programmed the ECO for 0% with no light and 25% with light. This gives me coasting almost as good as a bicycle and then two levels of regen when I put on the brake light (but not the brake itself unless extra stopping force is needed).
The question I had to answer by trying was: When the SPORT regen is set to 0% does the ECO regen drop to that same level when it is programmed for 0%. The answer: Yes.
As I have stated before: When slowing is not needed, the most efficient way to go down a slope is free coasting with no regen. When slowing is needed then use regen for that.
Now the bad news: The 2012 systems cannot be set to 0% regen because by default it goes back to the factory 7% the next time the key is turned on. If the Doc, or someone else, can figure out how to defeat that setting then 2012 riders could benefit from this ability to get good coasting also. It is very nice to roll down a gentle slope without using any throttle.
I'll copy this reply to 2013 also under "regen settings".
Trikester