Here's how I know a guy that KNOWS and a guy that's full of the bulla...
BS version --- "Yeah it makes 600hp"
REAL GUY version --- "it made 523 rwhp and 497 rwtq @ 6200 rpm's"
Note the difference? Real numbers with exact data -- and "out of my ass" numbers made up because they added up all the manufacturers "claims".
God I hate those guys...