He said in his other thread, its a W reg, 184bhp from the factory but this ones been remapped.
My mate just got his 330D done at Red Dot (exact same engine) and it made 229bhp afterwards, 182 initially, but Red Dot's rollers are known to be conservative if anything, which is definitely a good thing.
Glad you got the 5 series rather than the 3 series. Looks better and less ubiquitous. Let us know how the build quality is, as our family's 3 series were slightly on the questionable side - and I would hope/expect that the 5 series is better.