The real best way to down load it is to email the good professor. Upon request he will send you an evaluation copy of the software. I have a very strange system, the software had fixed assumptions that were wrong for my system (as are most tuners), and I could not directly use it.
I told him that he had a missing link. He did not chose to believe what I said. I told him of the strangeness of my system. He did not chose to believe what I said, until the data was in front of him. That was most of our interactions.
Sean