The Fiesta ST is one of the most successful small hot hatchbacks ever. And because it's affordable, many buyers like to do at least one mod, with the exhaust usually being the target. Seeing as we ...

The exhaust system is often one of the first things Mustang owners modify when looking for performance or enhanced sound. You can score a Hat Trick with the right pipes, as headers, mid-pipes and ...

If your 2009 Ford Fusion is flashing a P0400 code, it means your Exhaust Gas Recirculation (EGR) system isn’t flowing as it should. This can lead to rough idling, reduced fuel efficiency, and higher ...

The 5.0-liter V-8 in the 2018 Mustang GT is getting a power bump to make enthusiasts happy, and it's also adding a Quiet Exhaust mode to make the neighbors happy. It's part of a new active valve ...

Diesel engines, for all their rugged usefulness, can be tremendously polluting. They produce more NOx — nitrogen oxides-based emissions – than gasoline-fed cars, as well as more particulates, aka soot ...

We've all seen them at the shows or cruises-a fresh engine, sparkling in Ford Corporate Blue with every clip, hose, and wire perfectly detailed and positioned. Even the engine compartment is spotless.