“Instantly, that motor kicks in, boosting the native engine’s horsepower and torque by roughly 50 percent and giving me an idea of how Popeye feels after gulping spinach.”
-WIRED
“Suddenly, 3.4 liters turns into what feels like 5.0. The difference in thrust is unmistakable.”
-Road & Track
“Shadow Drive delivers better than your typical aftermarket power-adder in every way.”
-MotorTrend
Shadow Drive is available for select Porsche models exclusively from Vonnen and Vonnen authorized dealers for $75,000 installed in your vehicle.
For more info or to arrange a test drive today:
