Originally Posted by turbodisplay
I agree that they will cope arround 14.7 (lambda 1), above and below is a bit subjective.
My point is that they give suffient detail to ensure that the engine is not running lean, I personally have had quite a good result from these sensors.
I find that they will give suffient detail to 13:1 a/f ratio which is fine for me.
I`m looking into making a wideband sensor controller, but personally believe that it is best to tune on a rolling road and use in car sensors as a backup mechanism rather than tuning.
Thanks
Darren
Morning,
They are a good 30% out by 13:1 on average, remember, i use these every day and see the reference output compared to my industry standard Labcell unit. Another thing that gives cause for concern is that these narrowband cheap units tend to read richer as they get hot, so as the engine leans, the EGT goes up and the sensor reads richer... not a great scenario....
Bottom Line: Dont trust it, the manufacturers dont, and nor should we.
