Gary,
Sorry for not getting back to you with pics of the throttle controller. Picked up a nasty allergic reaction that put me out of sorts for a week.
Hope these pics are clear . The settings are Eco (economy), Norm (Normal), and then 30 different settings for increasing the degree of air mixture to reduce the lag on acceleration. I don't like Eco and mainly run in Norm mode. Sometimes I let it rip with 1.9, 2.9 and 3.9. The higher the setting the less lag.
I wouldn't be without it even though I run mainly in Norm.