We tested popular wideband O₂ controllers against lab-grade equipment to see how accurate their lambda readings really are under real engine conditions.

As performance enthusiasts and racers work with more sophisticated tuning tools—especially those designed for EFI engines—there's a growing debate on whether to use air-fuel ratio or Lambda in the ...

Don't let failing oxygen sensors compromise your engine's performance. O2 sensors are critical to emissions control on your car, SUV or truck. As the name implies, the O2 sensor (also called an ...

A few weeks ago, I visited a plant in Anderson, S.C., run by Robert Bosch Corporation, which builds oxygen sensors for automotive engine management systems. If you're thinking that a tour of a factory ...

Alina has been enthusiastic about vehicles her entire life, and even from an early age found herself itching to get behind the wheel. Through high school and college, she could be found reading ...

In the world of automotive tuning, knowledge is horsepower. Gauges, loggers, and sensors galore provide the data to advance performance, solve problems, and prevent expensive engines from experiencing ...

I recently had an engine fault light come on. I took the car to my local garage and they ran a diagnostic - it came up with a rear lambda sensor fault. They cleared the code and told me that it would ...