Just getting around to scanning & posting this dyno run capture of our 2002 Maser. Assuming a drivetrain loss of about 15-16%, I'd say Maserati is delivering on the rated 390HP. Most interesting is the torque curve. As suspected from seat-of-the-pants, the Maser engine is not as peaky as some other OHC engines. Not quite as stout as my Corvette's pushrod stump-puller, but not too darn shabby, either! Never did figure out what was causing the odd squiggles at the low end, but we guessed that the cambiocorsa (unmodified from 2002 stock software) might be the cause. Now I know why I find the Maser to be a terrifically fun car!