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Can I use the Narrowband O2 Sensor that came stock with my motorcycle instead of a Wideband O2?

It is not possible to use the stock narrowband O2 sensor on a bike for tuning with WRT, as the AFR measurement range is simply too narrow to use effectively for tuning purposes. 

We sell Zeitronix Wideband products that you can use to install onto the bike to measure AFR (Air-fuell ratio). Note that the wideband sensors (M18 threads) are larger then the narrowband sensors (M12 thread).  You will then need to either weld a wideband bung into your exhaust, or purchase an exhaust that comes with a wideband bung pre-installed. We do also sell a Narrowband to Wideband O2 Adapter that screw into the stock narrowband bung on the bike, however we advise using the aforementioned solutions first, as they provide more accurate AFR readings. 

Some dyno-tuning professionals use sniffer pipes to insert into the back of the exhaust which does then not require modification of the exhaust to install the wideband sensors.

Some bikes (eg. BMW S1000RR) do come with wideband sensors as stock, these can be used for tuning purposes through the 'Target AFR' maps in the ECU.

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