Pagani Huayra "La Monza Lisa" - Loudest Huayra ever?

I have filmed the unique Pagani Huayra "La Monza Lisa" starting up and revving multiple times. This is actually the one and only Huayra equipped with a custom titanium exhaust, and it sounds so badass >> http://www.youtube.com/watch?v=m_ku8PsPyOw