For the first time since 1977, Porsche is launching two new 911 models at the same time: the 911 Carrera with a 239 KW (325 BHP), 3.6 litre boxer engine, and the 911 Carrera S, powered by a newly developed 3.8 litre engine, which delivers 261 KW (355 BHP). Of course UPsolute Chiptuning offers an increased output for both models. Further details can be found in our database .