NASHVILLE, Tenn. (WSMV) - Diesel Performance Parts Inc. has agreed to pay $320K in civil penalties for selling illegal “defeat devices,” according to the U.S. Department of Justice.

For example, the Stage 1 Injectors by Full Force Diesel Performance have a flow rate of up to 180cc, whereas a mid-'90s stock 7.3 Power Stroke injector can only manage around 95cc. This improved ...