This isn't exactly fact just yet, but considering it comes from a site that actually has a ton of owners it probably isn't too far off especially considering that 366km/h Gumball run.
http://ferrarichat.com/forum/showthr...#post134364255
Anyway if you go a little down the page you will see someone posting about an Enzo that did 235mph. Also contributing to credibility is the mention of the computer versus the speedo which is important.