Preheat oven to 325º. Heat oil over medium heat in a saucepan. Add the onion and pepper and saute´ until tender. Combine flour, cumin, and black pepper in a mixing bowl and gradually add chicken broth; stirring until blended. Add the mixture to the saucepan with onion and pepper and bring to a boil. Cook 3 minutes or until thick, stirring often. Remove from heat and stir in cheese and sour cream. Combine 1 cup of the mixture, turkey, and salsa in a bowl. Spread ½ cup of turkey mixture down the center of each tortilla and roll up. Place the tortilla in a 13 x 9-inch baking dish coated with cooking spray. Pour remaining cheese over the tortillas and bake for 20 minutes or until bubbly. SERVES 6