from the article:
The most important upgrade is the engine, as the standard 5.2-liter V10 unit has received new pistons, connecting rods, bearings, camshafts, a water-cooled intercooler, an entire fuel system, as well as two bearing-mounted turbochargers.

The Torofeo also has a completely newly aligned exhaust system from the engine to the stainless steel tailpipes in the rear apron. All these changes result in a peak power of up to 1,000 hp, compared to 610 hp in the standard car, while maximum torque is electronically limited to 1,000Nm (737lb-ft).

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