Benefits of aftermarket Wideband O2 Sensor?

[Apneal]

Hi guys!

I have a 2018 civic sport hatch that I'm working on. So from a lot of reading I thought it was highly recommended I get an aftermarket wideband o2 sensor, which I planned on having installed. However the tuner said he was able to read AFR fine through the stock sensor and omitted wideband installation.

Do our civics come with good widebands already installed? What would be any benefit from installing a new/second wideband sensor?

Thanks for your input!

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[dc2turbo]

The primary o2 on the car is a wideband. So an aftermarket wideband is not necessary