The Heavy-Duty Chassis Dynamometer Emissions Laboratory is capable of handling vehicles ranging from pickup trucks to Class 8 trucks, buses and other heavy-duty vehicles, single or tandem axle ...

The Fast Lane Car attempts to trick a 2011 Volkswagen Jetta TDI into its emissions defeat mode over two dyno runs. It isn't clear cheat mode is actually active, but a power drop is detected from ...

Intrigued to see what effect it would have on power, torque and emissions, we took three of our long-term test cars and dyno tested them on regular pump fuels and then Super 80. This is different ...