If you build engines, tune cars, or even just like mashing your foot on the throttle with conviction, you’ve probably heard the term “wideband O2 sensor” being thrown around at the track, dyno ...

One of the most important measurements we make while tuning an engine is finding out what the actual balance of air and fuel was inside the engine. It doesn’t matter if we have a carburetor, port ...

Your car’s oxygen sensors and catalytic converter are key to both performance and emissions, but their accuracy can be upset by upstream faults. Issues like exhaust or vacuum leaks and misfires can ...