The only thing I would like to add is when re-attaching the tube to the throttle body, use a bar of soap on the inside of the tube and on the outside of the thottle body itself. This offers just enough to slip the tube back over. Without it, you'll spend a good 30 minutes pushing just to get nowhere fast.
I cleaned mine because at idle, my engine would chase between 900 and 750 RPMs. Now the car starts and idles at 1100 RPMS before falling AND STAYING steady at 850 RPMS. Here are some pics of the before and after cleaning.
