Just wanted to update this thread i started. I have this unit installed in my new Air World Mig-21 and it works perfect.I had some issues with the volume of air on the retrac valve but this has been modded and all of the newer valves will have larger air openings from the factory.The programming and set up is very easy. The ACU-200 is a good value and does everything the more expensive Airpower unit does. My next project will have one installed too.
V..