Diesel ECU reprogramming...?

I'd like to get my 2001 BMW 530D remapped for (even) better performance. Anyone got any experiences? Could someone suggest me a tuning shop, preferably in the euro region?

there are loads of chips, or ecu's for your car, however i wouldnt recommend them as they wouldnt do the money justice.
all the ones i could find where based in the UK, so not much use for you, however try to source an alpina ecu. if your lucky the alpina version of your engine. twin turbo, 245bhp 500nm

http://www.hestec.fi/chiptuning.htm <- Hestec does good job with chips.
http://www.hestec.fi/chiptuning/bmw530d.jpg

http://www.streetturbo.fi/index1.htm <- Read the stuff on the bottom of the site.