Porsche 911 Turbo is surely one of the fastest sport cars in the world at the moment but of course, there are still some car tuning companies, like Hamann that can modify anything, from Mini Cooper to Ferrari. If you are not pleased with the carâ€™s initial power (480 HP), Hamann created a special performance tuning kit called Hamann Stallion that will boost the engineâ€™s power to 630 HP. To gain this additional power they changed the carâ€™s turbocompressors with new ones that are bigger and stronger and they also installed a new exhaust system made from stainless steel and they modified the carâ€™s engine cooling unit. But the guys from Hamann werenâ€™t pleased only with engine modifications. They also cut around 8 cm from the carâ€™s roof, they equipped the car with 20â€³ rims, Lambo doors and they also made a lot of modifications to the carâ€™s body kit to make it more aerodynamic. In the end, thanks to all these modifications, the new 911 Turbo will accelerate from 0 to 100 km/h in just 3.3 seconds and it could reach a maximum speed of 359 km/h.