now its my turn
Iam one of the 120d Owners. We are talking about 210ps NOT on the wheels...
My friend has an 120d optimized by the MgmbH (unique! cost about 8000€) and is getting 240 ps and about 600nm torque!
with a 123d you should get about 245ps and 480nm... both values also NOT on the wheels...
/cheers
oli