Mounted a Malossi Multivar 2000 ==> Very good acceleration.
Mounted a G.p.r. Carbon exhaust ==> No difference.
I want to get more speed the max is now 115 km/h ==> I seen on the internet that speeds of 130 km/h is pôssibel? What do i need? Someone experince whit the G.p.r. Powerjet?