Quote:
Originally Posted by BEEFKING69
This is so cool....Would be awesome for tuning carbs and efi if you had an afr meter hooked up also.
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Going with the PLX AFR wideband sensor kit. I picked up a Gen 4 back in 2012 when they were new. I believe they're on Gen 6 now.
I think that it's great that they're designed to be used with external data loggers. The PLX generates a 0 to 5v analog signal that corresponds to the A/F ratio in that moment. So reading A/F from my processor is a simple deal without a lot of hardware headache. I plan to use a diode array to protect my processor's input pin against over voltage from the PLX, but that's about it.
Here's the note in the manual on the 0-5v output for use with data acquisition. Well worth the money.
And here's the chart showing output voltage versus A/F, and the formula for the processor. This will be part of the real-time data recorded and sent to the operator display.
