Amigos got a response from ECOTUNE:
Unfortunately it doesn't fit... I have tried to get a US original part so we can make one for your market. The software is almost identical and one USA customer had his car on a rolling road after our software and getting a custom downpipe. He achieved 374hp/540ft lbs...
I have attached a dyno graph of a recent 535d in our workshop which had this modification.
Unit 10, 36 Dalziel Road,
Hillington Park Industrial Estate
Phone/Fax: 0845 409 4567
Mobile: 07595 423160
Ecotune is a trading name of Ecotune UK Ltd registered UK company number 06807470.
All prices include VAT at the standard rate and is charged where applicable.
VAT registration number 985 1795 63.
All brands displayed are property of their respective owners
Diesel Diner send me a PM so I can send you the graphs which are pretty IMPRESSIVE!!!