30-0300 comes with... what is FAE sensor?

[AndreyB]

The AEM/FAE sensor lasts up to 3x longer than the Bosch 4.9 LSU with a 10% faster response time in testing

sensor plug looks like 4.9 but they say sensors are not compatible?! what could possibly go wrong?

the gauge serial number must start with 0400, new sensor will not work on older serial numbers starting with 0300

[AndreyB]

Looks like same exact CAN bus protocol?

https://documents.aemelectronics.com/30-0300_for_x-series_fae_uego_gauge_kit.pdf

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matches
https://documents.aemelectronics.com/techlibrary_30-0300_x-series_wideband_uego_afr_sensor_gauge.pdf

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[AndreyB]

Hold on is that https://www.fae.es/en/productos/sondas-lambda ?

On the one hand it's a legit looking company just not a huge one

Test Car
We have *seven* test cars, one of them electric, two motorcycles and two test benches to be able to test our products in a real vehicle, and thus obtain more precise data for a better knowledge and response of the product before its commercialization.

[AndreyB]

https://www.fae.es/wp-content/uploads/2022/06/1111759_cat._FAE_COX7_sonda-lambda__oxygen-sensor.pdf has

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