In a move that could reshape enforcement of the Clean Air Act in the diesel truck world, the United States Department of ...

It's still illegal to violate the Clean Air Act, but now the worst that can happen is a fine.

Yet another tuning shop has been fined as part of the U.S. Environmental Protection Agency’s ongoing war on diesel emissions defeat devices. At the receiving end of the punishment this time around is ...

Despite the recent news that the Environmental Protection Agency (EPA) no longer lists emissions defeat devices as a top priority, there’s still no two ways about it: Tampering with a tune to defeat ...

EPA Is Hunting America's Largest Tuning Companies What Cobb’s Emissions Lockout Means for Tuner Cars You Should Option the Diesel in Your New Suburban The EPA had previously issued Spartan Diesel ...