It is funny to see how many times this post comes up and how so many hate some companies and some love the same ones. There is alot of good converter companies out there and sometimes an issue is the customers fault and sometimes its ther converter companies. I would think one of the biggest problems is incorrect info but thats just my guess. Myself I would have no problem dealing with Turbo Action or Dynamic since I have used both with great results. Also ATI , PTC , Continetal , Ultimate and many otther good name companies would be no problem for me to use. As I said I have only used Dynamic and Turbo Action with great results but I see many very good running cars with different brand converters that have to work good since many of the cars out there run so good with many different brands. My opinion to someone is talk with someone they know and trust that has a good running car with a converter that works good and go with that. Ron