My fasting glucose was 200 to 250 before I started pumping, now it is usually in the 95 to 110 range. I have dawn phenomenon, at it's peak in the middle of the night I have my pump deliver about 4 times as much insulin as during the afternoon. That controls my glucose very nicely.
Pumping is not for everyone, you need to be willing to learn to count carbohydrates in order to put it to good use.
It's a lot of work, but the results can be amazing.