Hello, I have installed the Pioneer DEH – P88RS in my Passat 3b. In between there is such a phantom feed. Unfortunately the reception is not good. The station search does not find a transmitter. If I manually set up a strong transmitter the reception is bearable, but not good. I tried it without a taptom feed, it is not much different, it feels a little worse. Before such a VW radio was in there, the reception was better. What can this be about? What can you do? Greetings