blkxer,
i to would like to see your finished install.
I also have a cd-player with DSP amp on a 2002 x5 4.4i

Does anyone know if there is an amp replacement without re-wiring the entire car.
For example can the dsp amp be replaced with a non-dsp bmw amp from a vehicle of the same year. I know wishful thinking.
Cars are wired different so amp can not be swapped.