In a small bowl mix the rub spices and brown sugar.
Clean the ribs up by removing the back membrane, salt and pepper both sides and spread the rub spice mixture over the top of the ribs. Let stand at least 30 minutes at room temperature,
but I prefer to wrap in plastic wrap and foil and place in the refrigerator over night to marinate.
Brush the cooking grates clean with a wire brush. Put the rib(s) bone side down, and close the lid.
After 30 minutes, baste with sauce.
Cook until the meat has shrunk back from the bones at least ½ inch and the internal meat temperature is 196°, about 1 hour. Baste one more time with sauce. Keep the temperature of the grill at 250°.
Remove the rack from the grill and let rest for 10 minutes. Cut the rack into individual ribs, sprinkle chopped cilantro over ribs and serve warm.