empeg #00001 is in a E36 (320i) - the whine isn't too bad: it's there, but you can't hear it with music on/when you're moving. On his install, the cables go down the side of the car too.

One thing I noticed on my honda install (which I did at home) is that you really shouldn't bunch up the phono cables (when they're too long) right next to the empeg's power filter - just changing this got rid of 90% of the noise. Ideally, don't bunch up the cables at all, just use ones the right length :)

Hugo