I have an A1000 and using the controller for it as well...

At idle it slows the pump down as mentioned..it is fully adjustable when you want it to ramp up to full speed as well.

Only been up and down the street a few times with the car, but it is close (super duper close) to being totally done and will be doing some miles in it so will see how well the combo does with lots of driving around on it