Yokomo Drift Servo Program Card. This is an optional program card designed for tuning drift servos to the liking of the user. some adjustable features include power, torque, hunting suppression, and neutral width values, and the system also offers a servo-operated reverse function. While the default performance of the SP-03D and SP-02DV2 is already impressive, these settings can be finely tuned to cater to the discerning preferences of expert drivers seeking even greater precision. package includes one program card and one servo connection.