We drill holes in an exhaust header to demonstrate how even the tiniest exhaust leak can affect O2 sensor accuracy and yield unreliable tuning data.

Q. I am installing a wideband oxygen sensor and am curious about what A/F (air/fuel) ratios to aim for. Here is where I am stuck: I run a 20 percent blend of E85, and with the pump gas also with a ...

While millions suffer under a virus that hits the respiratory system, Apple has launched a new watch that may be able to detect respiratory problems with an oxygen sensor. We tried out the new ...