I hope to be the first to ask other owners this question: has any of y'all used this "TornadoAir" device in your cars? It seems to be a relatively inexpensive and safe(?) way to minimally increase mileage and power; if it does work. Also, do you think it would work better if positioned closest to the engine, or vice versa? I bought one but have not installed it. Also, any trick I need to know about disconnecting the air hose?