We tested popular wideband Oâ‚‚ 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 ...
I had a test done at local auto-parts store that showed a code of PO138. They told me this indicates a problem with the oxygen sensor. I replaced the oxygen sensor and the light never went out. I ...