retrofit DSP into E53
 

My E53 didnt come with DSP however my old E39 did.
I think my DSP amp in my E39 was philips? but i upgraded to a "lowe" DSP amp (i think that was the brand anyway)

however my E53 doesnt have DSP and i was looking at retrofitting it..

how easy/ hard of a job is it? on the e53 is it just the amp itself as i did see some images of a sub unit that i think its behind the right hand side storeage box in the boot.

can anyone else shed some light please...

double posting... just delete this thread, so it does not confuse potential respondents and keeps the discussion in one place...