Surely, anybody driving off the dealer's lot in a brand new Ferrari 458 Speciale should be happy with what they've got. Not only is this one of the most beautiful cars on the road, but it also comes standard with a naturally-aspirated 4.5-liter V8 engine that boasts an insane growl from its factory-spec exhaust system. But for some people, of course, there is always room for improvement, and this example is living proof of that. Fitted with a custom valvetronic exhaust from Frequency Intelligent, this Speciale is said to be "louder than an F1 car".

To prove this claim, the Fi-equipped Ferrari was given the ultimate test in one of Monaco's legendary tunnels: