Mercedes S 350 258 h.p.
Tat Nhan Antalya
With GAN GT: 258 → 326 hp +68
Advantages: The dynamics has improved while the city driving. I can particularly notice changes when driving on the highway. Finally, there is a power margin and it is more convenient to overtake at speed of 120+.
Disadvantages: Disadvantages - the lack of Velcro in the installation kit (there are only ties).