The federal government will not pursue criminal charges for DEF/DPF tampering, but truckers should hold off on buying a ...

Owners of diesel trucks are likely to seek methods of increasing performance and fuel economy and most probably may discover a bottleneck with the Diesel Particulate Filter (DPF). The DPF is important ...

If a diesel shop is offering emissions delete services -- illegal under the Clean Air Act -- and is trying to fly under the radar of the U.S. Environmental Protection Agency, it might not be the best ...