Harley-Davidson has agreed to pay $15 million to settle a U.S. Environmental Protection Agency complaint over engine devices the EPA said caused excessive pollution. The settlement calls for Harley to pay a $12 million civil penalty plus $3 million to mitigate air pollution through an EPA project of replacing woodstoves with cleaner-burning stoves. Also, the company has agreed to buy back and destroy thousands of “super tuner” devices that were the subject of the EPA complaint. The agency said Milwaukee-based Harley manufactured and sold approximately 340,000 of the devices that, once installed, caused motorcycles to emit higher amounts of certain air pollutants than what the company certified with regulators. Harley-Davidson also manufactured and sold more than 12,000 motorcycles that were not covered by a certification that ensures a vehicle meets federal clean air standards, according to the EPA. “This settlement immediately stops the sale of illegal aftermarket defeat devices used on public roads that threaten the air we breathe,” Cynthia Giles, assistant administrator for EPA’s Office of Enforcement and Compliance Assurance, said in a news release. “Harley-Davidson is taking important steps to buy back the ‘super tuners’ from their dealers and destroy them, while funding projects to mitigate the pollution they caused.” “Given Harley-Davidson’s prominence in the industry, this is a very significant step toward our goal of stopping the sale of illegal aftermarket defeat devices that cause harmful pollution on our roads and in our communities,” Assistant Attorney General John Cruden, head of the Justice Department’s Environment and Natural Resources Division, said in the release. Since January 2008, Harley has sold two types of engine tuners which allow users to modify the emissions control system of a bike, according to the EPA. “These modified settings increase power and performance, but also increase the motorcycles’ emissions of hydrocarbons and nitrogen