Thanks for the info, I guess I should rephrase that rather than using turbo mode(as I suppose I don't quite understand how they work yet), I would probably set it up so that it would be on "full assist" at all times, so to speak. Also the delimiter may take care of the cutting in and out.
I don't mind going fast if I am able to. I'm hoping the SL is capable of reaching the 15mph stated fairly easily on flat.
The three modes can be set to any level of assist/max power but the aggressiveness of how the assist comes in is different in each mode and is not adjustable. Turbo comes on with a bang! The SL can reach 15 mph on flat easily in Eco mode depending on how much assist/max power we specify in Mission Control.