Illegal exhaust systems are annoying to thousands of us

5:55 p.m. Southbound on Crown Valley Speedway, south of Clubhouse, a black BMW with screaming exhaust system, is speeding away at more than 70 mph. For those residents who live in Laguna Woods and around National Park Drive, and West Nine, the blare of racing cars is almost constant -- and in violation of state and local noise ordinances. Enforcement of noise issues: where are you officers?