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Mona W. Berlin: Unreliable car
I drive an "antique" VW Golf which had developed the habit of switching itself off. This happened, of course, mostly at traffic lights but also occasionally as I was driving along. Since I got my Harmony evolution, my Golf behaves again like a proper car.
Mary S., Cleveland, Ohio, U.S.A.: Dramatic first reaction
The first evening of wearing the harmony chip, I felt heat on the chip to the point I had to remove it and put it on another problem area.