If you build engines, tune cars, or even just like mashing your foot on the throttle with conviction, you’ve probably heard ...

As the world that is our Mustang hobby continues to evolve and the methods by which we improve ’Stangs’ engine performance become more dynamic, monitoring the mixture of air and fuel has mandatory ...

This is the basic Gunson CO tester. The 12-volt connections power the unit while the pulse pump draws exhaust gas into the analyzer. The unit is designed to measure CO exhaust percentages. Those ...

Properly tuning your engine used to fall more into the witchcraft category than the scientific. It was tough to tell if your ride was running rich, lean, or dead-on. Even if one managed to get it just ...

Where does the ideal air/fuel ratio come from? What makes 14.7:1 the ideal air fuel ratio for gasoline combustion? This video explains the chemistry behind internal combustion engines using octane as ...