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In the EFI Components Oxygen Sensor course video it’s stated: 01:42 “Since the narrowband sensor is only effective at the stoichiometric air-fuel ratio they aren't particularly useful for us when it comes to actually tuning the engine.”
And at 01:52 “For this purpose we need a wideband sensor which is able to accurately measure across the range of air-fuel ratios that we may end up running our engines at.”
Therefore I need the proper upstream sensor in order to tune my car.
I have a Goodwin Racing cat midpipe with the standard size two bungs for the sensors.
