Automobile magazine dyno'd 2-335i coupes on 2 separate occasions. Their most recent article is here:

http://www.automobilemag.com/feature..._dyno_revised/

Their first 335i averaged 275 hp and 300 lb-ft. They estimated the engine's true rating to be in the range of 350 hp and 360 lb-ft. Their next 335i dyno tested at around 285 HP/285 FT-LB with a peak at 299.93 HP.

They got their first 335i to run the quarter in 13.6 seconds @ 104 mph. Smoking.....

And they're going to stick this engine in the X3? That could be a very nice daily driver...