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

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

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 ...

What’s being described as an “onboard weather station,” the 3.6L twin-turbo LF3 V6 engine launching in the 2014 Cadillac XTS Vsport and 2014 CTS Vsport this fall is equipped with a set of sensors that ...

There are a million and one things that could go wrong with a car engine. In old times, it was solely up to the owner and/or technician to drudge through possible issues until they determined what was ...