German tuner Kubatech has a Stage II tuning package for the currently discontinued Porsche Carrera GT.
Kubatech refers to itself as an engine software specialist and it is mainly through an ECU optimization that it dials up the power on the Carrera GT's 5.7 liter V10 engine from a standard 612 PS (450 kW) to 660 PS (485 kW). Torque also gets a bump to 642 Nm from the series' 590 Nm.
Also added is a Cargraphic sport exhaust system made of high-grade steel that makes for upgraded numbers on the Carrera GT. The Stage II's top speed is now 343 km/h (213 mph), compared to the previous 330 km/h (205 mph), and the 0 to 100 km/h sprint time is improved but Kubatech does not specify by how much.
Stage II tuning of the Porsche Carrera GT by Kubatech comes at an all-included cost of €10,699.