Style chooser

i currently converted to four disc brake, parts all new and serviced(seals,brakepads and rotor).......i have installed steel braided hose and double layer servo too.... but, when i do emergency brake at high speed, my car just being pulled to right side....... why this can be? the right brake has jammed before but my mech fixed it by open caliper from my rotor and put it back(without release the brake fluid)...... my car is wira converted to mivec1.8 turbo.. i admit that my car has accident...