Well I searched the net and the owners manual for an adjustment as I expected to find one, I never did. In a car without a computer control I would expect the electronic assist to be more analog, rather than continuously variable.
As to whether my comment is usefully, well it is an experience I had, maybe it is not your experience.
It's not really your duty to decide if others experiences are usefully or not to the OP.
But thanks for sharing.