I think the TCI stuff is a lot like the B&M Holeshot series.... If you have the converter in the car and the decal on the window, does it really matter if it works right??? (or at all?) I guess if all you are running is a heavy car with 300 horse the cheapies are fun. When you really get ready to go fast, it's going to take a whole lot more converter and $$$$ then the "one size fits all" stuff the mailorder houses pedal....