What upstream wideband oxygen sensors are available that fit my 2023 Mazda MX-5 ND2?

In the EFI Components Oxygen Sensor course video it’s stated: 01:42 “Since the narrowband sensor is only effective at the stoichiometric air-fuel ratio they aren't particularly useful for us when it comes to actually tuning the engine.”

And at 01:52 “For this purpose we need a wideband sensor which is able to accurately measure across the range of air-fuel ratios that we may end up running our engines at.”

Therefore I need the proper upstream sensor in order to tune my car.

I have a Goodwin Racing cat midpipe with the standard size two bungs for the sensors.

The primary o2 sensor is a wideband from factory.

My online search, asking, “Is the Oxygen Sensor on the 2023 Mazda MX-5 ND2 2.0L a broadband O2 sensor?” returns this result from an AI search from mazda.oempartsonline.com: “The 2023 Mazda MX-5 ND2 2.0L uses a narrow-band oxygen sensor, not a broadband O2 sensor.”

I just checked the above link and found that it’s for the the rear sensor, so here’s the link for the Front/Upstream sensor, and they are different, but neither indicates if they are wideband or narrowband: https://mazda.oempartsonline.com/oem-parts/mazda-oxygen-sensor-p517188gx.

And for the rear sensor it’s: https://mazda.oempartsonline.com/oem-parts/mazda-oxygen-sensor-p51818861. Bold is the sensor’s part number.

However, a search for Is the front Oxygen Sensor on the 2023 Mazda MX-5 ND2 2.0L a broadband O2 sensor? indicates that “Yes, the front oxygen sensor on the 2023 Mazda MX-5 ND2 2.0L is a broadband O2 sensor. This type of sensor is designed to provide more precise readings of the air-fuel mixture compared to traditional narrow-band sensors.” partsgeek.com, CarParts.com.

However, following these two links indicates in the description, “Sensor Type: Narrow-Band,” from partsgeek.com.

And CarParts.com doesn’t show the sensor but only answers the question, “Upstream vs. Downstream O2 Sensor: What’s the Difference?”

So where do you get “The primary o2 sensor is a wideband from factory?”

Please reply linkedsubaru Al Harding:

My online search, asking, “Is the Oxygen Sensor on the 2023 Mazda MX-5 ND2 2.0L a broadband O2 sensor?” returns this result from an AI search from mazda.oempartsonline.com: “The 2023 Mazda MX-5 ND2 2.0L uses a narrow-band oxygen sensor, not a broadband O2 sensor.”

I just checked the above link and found that it’s for the the rear sensor, so here’s the link for the Front/Upstream sensor, and they are different, but neither indicates if they are wideband or narrowband: https://mazda.oempartsonline.com/oem-parts/mazda-oxygen-sensor-p517188gx.

And for the rear sensor it’s: https://mazda.oempartsonline.com/oem-parts/mazda-oxygen-sensor-p51818861. Bold is the sensor’s part number.

However, a search for Is the front Oxygen Sensor on the 2023 Mazda MX-5 ND2 2.0L a broadband O2 sensor? indicates that “Yes, the front oxygen sensor on the 2023 Mazda MX-5 ND2 2.0L is a broadband O2 sensor. This type of sensor is designed to provide more precise readings of the air-fuel mixture compared to traditional narrow-band sensors.” partsgeek.com, CarParts.com.

However, following these two links indicates in the description, “Sensor Type: Narrow-Band,” from partsgeek.com.

And CarParts.com doesn’t show the sensor but only answers the question, “Upstream vs. Downstream O2 Sensor: What’s the Difference?”

So where do you get “The primary o2 sensor is a wideband from factory?”

The o2 sensor thread is universal. Any wideband will work. Bosch LSU4.9 is usually the go-to. I don't know mazda ecu's, but that is your answer to "where to get a wideband o2 sensor" how you import/log/utilize the data provided by your wideband is another question.

If you have the tuning tools and can read the lambda/AFR value of your car currently, and it reports something other than .99 or 1.02 lambda, then you have a wideband.

Mazda specific part questions are usually better suited for mazda/mx-5 specific forums. There's a lot more knowledge there.

For any Mazda MX-5 ND owners out there, doing an online search for AIR FUEL RATIO (A/F) SENSOR SKYACTIV-G 2.0 type, using their description from the online Mazda MX-5 ND Workshop Manual for this upstream sensor, returns the definitive AI results below:

The AIR FUEL RATIO (A/F) sensor for the SKYACTIV-G 2.0 engine is a 5-wire wide-band sensor that helps optimize fuel efficiency and reduce emissions by measuring the air-fuel mixture. It operates by providing feedback to the engine management system to adjust fuel injection based on driving conditions.

As for Elon Musk, the hardest part of any problem isn’t the answer, it’s working out the right question to ask! If you can get the question right, the solution tends to fall out almost on its own.

If you want a specific kit, The AEM X-series comes with an LSU4.9. The kit with gauge is like $30 more than the part itself. When I smothered my first O2 sensor, I was mind blown (be sure about your VE tables) and since i didn't buy it directly from AEM they weren't interested in warrantying it, neither was the company I bought it from. However, after speaking with Anthony for some time, I ended up getting another kit, from him and now it is under their protection. Now that particular o2 sensor is free forever.

VS went to Bosch, I must have explained which department I was looking for a half dozen times, I was transferred to every department in that company. At the end they had transferred me to appliances, I then hung up and sent a message on their inter-webs. Which they said they typically respond in 48 hours. It has now been 9 months....

Anyway, I have a 93 NA6, your ND is built off my NA platform, A lot more parts from your car are compatible with my generation than any other year.