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ZHSYMX Universal Digital Wideband Air/Fuel Ratio AFR Gauge - 2-1/16"(52mm) - Wideband UEGO AFR O2 Oxygen Sensor Controller Gauge
ZHSYMX Air Fuel Gauges are essential when tuning any performance vehicle. This 2-1/16” (52mm) digital wideband gauge allows you to closely monitor and tune your car or truck’s Air to Fuel Ratio. Select Gasoline AFR readings from 10.01 to 20.00 AFR, E85 readings from 6.66 to 13.31 AFR, or LAMBDA readings from 0.683 to 1.365. With this digital wideband AFR gauge you’ll have the ability to carefully map out your vehicle’s Air to Fuel Ratio through the range of engine RPM. Benefits include maximized power and engine performance, higher fuel economy and reduced emissions.
Modify Alarm number
Long press and hold the WARN button, and the number will start flashing
Press the WARN button to set the number to rise
Press the PEAK button to set the number to decrease
After reaching the required number, let it sit for three seconds and the number setting is complete
The Air Fuel Gauge Kit is Included a 4.9 sensor that provides real-time feedback with high accuracy and fast response time, and the digital wideband technology gives these controllers the ability to read and report values.
In addition to measuring and displaying the air/fuel ratio, the Air/Fuel Ratio Gauge also features a broadband measurement and digital display.
Alina
Reviewed in the United States on February 9, 2025
Product seems like it’s good quality , only question I have is will it be compatible to work with hp tuners ?
Arnas Gineitas
Reviewed in the United States on February 7, 2025
Really decent AFR kit for the price. Worked great right out the box. I'm sure the more expensive ones are nicer looking, as the plastic casing on this is pretty cheesy, but I mounted mine in the dash, so doesn't really matter. Really helped me dial in my carb.
Cammed Ram
Reviewed in the United States on February 28, 2025
Not compatible with HP Tuners.
Tim Pajari
Reviewed in the United States on December 6, 2024
Great little meter to adjust the air/fuel mix on my Edelbrock! Easy to install if you have an O2 sensor bung welded into your exhaust. Otherwise it can be a bit time consuming. Very helpful to fine tune carburetors. Leaving it installed gives you heads up on the engine’s performance.
MacLeod
Reviewed in the United States on December 2, 2024
Very comparable to AEM uego style that I've used for 5 used fr 5 years. Just as precise, accurate quick real time AFR display as AEM. Used on my 2006 z06 vette as stand alone unit. But four stars bc it has no analog output to integrate with cataloging devices. Still excellent for the price. Lack of clear indication of no analog out is the reason for my docking it a star. But 5 stars as a stand alone device!
C. Earnshaw
Reviewed in the United States on December 13, 2024
This has been really helpful in allowing me to tune the carburetor on my classic car. I had a local muffler shop weld a bung into the tailpipe, connected the gauge to 12V, started the motor, and within in minute or two I was getting readings. Idle mixture was a little rich, as I suspected. Fixed that on the spot and have new jets on order to lean things out at full throttle. So far it's working very well.My only nit is with the gauge mounting hardware. There were no instructions about them, so you're left to figure them out on your own. The purpose of one of the brackets is obvious-- it's a pedestal-type mount-- but I still don't know what the other is for. The hole spacing on this mystery bracket matches the holes on the back of the meter, but there are no other holes, so not sure how you would mount it to anything unless you're supposed to drill your own. Also, the plastic shell for the gauge fits very loosely. They include some foam tape that appears meant to keep the shell from falling off. It does work, but it would be nice to have had a paragraph or two about this and the bracket so that you're not left guessing as to the purpose of what's in the kit.Overall, I'm quite happy with the product, but the mounting hardware is really cheap, flimsy stuff. Also, the o2 sensor is Chinese knock-off and not Bosch, so you do get what you pay for in that regard. It is nice to have an inexpensive option like this so that I don't have to spend several hundred dollars for something I will use only occasionally.Hard to know how accurate it is without a Bosch sensor to compare against, but the car does seem to run better since I adjusted the mixture.
T
Reviewed in the United States on November 14, 2024
Tuning vehicles usually comes down to 3 basic things, air, fuel, spark. Now these days depending on the platform there is a LOT more that goes into it, but these principles still exist. What is cool about this setup is it is an all in one way to monitor the air fuel ratios from the exhaust gases.I plan on using this on an older vehicle that does not have the more advanced computer controls to monitor and tune these levels. The gauge its self feels light weight, it comes with a mount to put it on and to mount it inside the cabin of the car. Has a long corded o2 sensor included which you will run to the gauge. This sensor is able to determine the amount of fuel in the exhaust gases coming out of the engine.This would also work on newer vehicles that do not have wideband sensors to utilize for tuning. My understanding is the wideband sensors are much better at proper monitoring then regular o2 sensors.This seems like a decent setup and has everything included, I will update my review once it is installed and in use.
TheLastAndTheCurious
Reviewed in the United States on October 17, 2024
I like that this wideband came with a gauge pod to hold the gauge in. Although the brand is ZHSYMX, the guage face looks just like my other non-AEM widebands. I have my o2 bung mounted on top of my exhaust, just after the collector, facing down so moisture can't accumulate. So far it's worked for about 30 mins of run time on my engine stand, but I don't know about longevity yet. Usually you don't run these long term on your ride, you only use these for tuning and then plug the hole, while your existing O2 sensors (if you use any) are in their stock locations.Install was about as simple as any wideband can be.The readings fluctuated at first (starting from a cold motor), I don't know if the sensor was burning off oil or what. But after about 1 minute of running the AFR numbers became more stable. It still fluctuates on startup some.What someone told me to prolong the life of my wideband sensors:* Don't have it powered on when the engine is not running, you can over use the ceramic heater* Don't let it be powered on and then start the engine, or the moisture from startup (the hydro in hydrocarbons) can shatter the cermamic heater in the sensor which heats to 1400 in seconds.* Don't leave it unpowered in a running engine, over time it will degrade the sensorIn short, let the engine run for several seconds and THEN power the wideband on. (Not just the gauge, I'm talking about the sensor itself) If you see steam coming out of your exhaust, you need to wait longer.
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