The Environmental Protection Agency (EPA) and the U.S. Department of Justice (DOJ) have just come to a settlement agreement with Harley-Davidson, which sees the American motorcycle manufacturer agreeing to pay a $12 million fine for its Screamin Eagle “super tuner” devices.

Also in the agreement, Harley-Davidson agrees to spend $3 million to mitigate air pollution (through a project to replace conventional woodstoves with cleaner-burning stoves in local communities), as well as to stop selling, buy back, or destroy any illegal devices that increase air pollution from the company’s motorcycles. Boom goes the dynamite.

While not quite the Dieselgate scandal that caught Volkswagen circumventing EPA emission standards, Harley-Davidson’s “super tuners” do provide an aftermarket solution for motorcyclists to circumvent the emission devices on their motorcycles.

Compounding the issue though, Harley-Davidson has sold an amazing number of these tuners. Accordingly the EPA and DOJ came down on the Bar & Shield brand like a box of bricks, but the likely costs to take the boxes off the market will make the fines pale in comparison.