any obd dongle with the ability to stream live data ie CO2, HC and NOX ?

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    Cars don't have those sensors. You can install them in the exhaust pipe, and use any communications protocol you please. Jan 16, 2020 at 7:46

1 Answer 1


No vehicle has sensors for CO2, HC and NOX. That's measured at the tailpipe with a 5-gas analyzer.

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