I've just replaced a Sony HU with a Pioneer P88RS and the iPod CD-IB100II interface in my A3.
I have an aerial amplifier between the HU and the original lead and it is connected to the remote out of the HU for power.
The radio reception is really poor! I have the HU and the iPod adaptor all running off the same ground and have the aerial amp connected to the farka input on the original loom.
Anyone any suggestions for improving the reception. The reception wasn't great with the Sony but it is worse with the Pioneer. I'm thinking it might be having the iPod unit on the ground too that isn't helping?