In the past two months we've covered most of the emission systems that have appeared on recent automobiles. This month we'll conclude our discussion of these systems with those devices designed to ...

Your car’s emission control system isn’t just about passing smog tests—it’s about keeping your engine efficient, your fuel bills lower, and the air cleaner. From EGR valves to MAP sensors, oxygen ...

Inrecent years, independent research has helped clear up many myths within the Pontiac hobby. One area, however, that still remains shrouded in mystery is the midyear emissions system change that ...

Hondas are known for their reliability, but like any other complex machine, they can run into the occasional issue. One of these is the dreaded "Check Emission System" or "Emissions System Problem" ...

As we move through 2026, the automotive tuning world faces a critical shift: turbocharger upgrades are now legally classified as engine control system modifications, not just performance parts. This ...

A new policy has halted all criminal investigations and prosecutions of those who bypass vehicles’ emissions control systems, although civil enforcement may continue. The Justice Department on ...

Emission control systems in modern cars have slashed air pollutants such as particulate matter and nitrogen oxides. But these systems face two major challenges: carmakers cheating on pollution tests ...

More broadly, cargo owners, funders and class societies also need more transparent and dependable emissions data to make ...