1. Preheat the BBQ to 300°F (150°C) (medium-low). Rinse the chicken wings and pat dry. 
  2. In a mixing bowl, stir the sugar, salt and spices to blend well. Set aside 1 tbsp (15 mL) of the spice rub and toss the remaining rub onto the chicken wings, coating well. This can be done up to 2 hours ahead of time and chilled. 
  3. Grill the chicken wings, with the lid down, for an hour, turning once. For the glaze, stir the maple syrup, vinegar and reserved 1 tbsp (15 mL) of spice rub together, adding Sriracha hot sauce to taste. Brush this over the chicken wings and BBQ them 15 minutes more. Serve immediately.