Place dark chocolate chips in a small bowl. In a small saucepan, heat butter and cream just to simmering. Pour over chocolate; stir until smooth. Stir in bacon. Cool to room temperature, stirring occasionally. Refrigerate, covered, 1-1/2 hours or until firm enough to shape., For coating, place baking chips in a small bowl. In a small saucepan, bring cream just to a boil. Pour over baking chips; stir with a whisk until smooth. Stir in maple flavoring. Cool completely, stirring occasionally, about 1-1/2 hours., Shape dark chocolate mixture into 1-in. balls. Dip truffles in maple mixture; allow excess to drip off. Roll in pecans; place on a waxed paper-lined 15x10x1-in. baking pan. Refrigerate until set. Store between layers of waxed paper in an airtight container in the refrigerator.