Settling CAA defendants that manufactured and sold after-market devices to defeat the functioning of certified emission control systems on motorcycles must pay a $12 million civil penalty, must stop selling the illegal tuners in the United States by August 23, 2016, must buy back and destroy such tuners from dealerships, must meet certification requirements for future sales, and must spend $3 million on a project to replace conventional woodstoves with cleaner-burning stoves to mitigate excess hydrocarbon emissions.