Quote Originally Posted by rebel.ranter
I have a DICE in my e39, and yes, I have experienced the engine noise through the iPod on occasion. Weird thing is that it's not all of the time. I keep meaning to relocate the connection to the back of the radio instead of running it all the way back to the boot to the CD Changer connections.
I reckon some sort of suppressor for the power supply would also help.
Would a ferrite help eliminating some of the HF interference?