Tuners SpeedART has given the Porsche Panamera Diesel a new performance kit, which boosts power up to 300bhp
German tuners speedART has given the Porsche 911 Turbo a performance boost, calling it the BTR II 580
SpeedART is set to reveal its latest creation, the Porsche Panamera PS9-650, at the Essen Motor Show in Germany
