COSBER has bring its newly high performance 4WD Dyno to Shanghai Tuning Car Show (CAS 2012). It is the first time in Shanghai CAS, a 4WD Dyno is demonstrating to the car enthusiasts and tuning professional. DYNOCOSBER 4000S is a newest model of Cosber dyno with the ultra-high performance capability, its measurement power up to 2000 ps and the testing speed to 250km/h.