Of course there are exhaust gasses flowing from all exhaust pipes of California or 458. Having non-functional purely cosmetic pipes on Ferrari would be somewhat tragic, considering the brand\'s image and price one has to pay for one of those cars.
However, like I said before, you can not have true triple exhaust setup on 8 cylinder engine. And by \"true exhaust\" I mean a connection going from the rear of the car all the way to the exhaust manifolds.
458 has triple exhaust tips not exhausts. It is a common practice to have dual exhaust with quad exhaust tips (which is the case for California as well).