Wideband UEGO Air/Fuel Ratio Gauge 52mm (2-1/16”) with 4.9 LSU Sensor, Digital AFR Controller Gauge, Wideband O2 Control Sensor kit | 0-5V Analog Output (10-20 AFR Range)

Been working spot on for over a year no issues. Only think I can say compared to the authentic AEM gauge is that this one responds just a little slower but is still accurate.

I read as many good things as bad things about this Air/Fuel gauge. I even bought extra Bosh sensors (still in the box today) expecting quick failure of the UEGO supplied sensor. However, all functions and devices shipped with and built into this gauge "kit" are working flawlessly for the past week. This is not a long time track record, but my fingers are crossed for continued performance. In the past, I was not able to get a good tune-up on my Edelbrock model 1406 carb, but with this gauge I can see in real time the results of new jets and metering rods. BAM! Spot-ON! Zippity-Do-Dah! Noticeable improvement in acceleration, emissions and probably economy. I'm still working on lowering the richness from the secondaries under wide-open-throttle (W.O.T.) only because I don't yet have the smaller jets, but this gauge will tell me when I've got it right! My ideal gauge numbers are 14.7 while cruising and 12-13 W.O.T. NOTE: I am using the factory default measurement setting and have not yet used the other 2 measurement settings including (LAMBDA).

Hooked up the gauge for the first time today. Had sensor hooked up before adding power and ground. Gauge came alive at 14.7 and then climbed to full lean. Which seems correct since the engine wasn’t running. I started the engine and nothing. I tried more throttle and not a blip of change. I verified good power and ground. If the company can reach out to me about warranty for the sensor atleast, I’d appreciate it before I return the whole setup. Or if they have any in-depth T/S. I was hopeful and and thought I’d get lucky with a good setup, but it seems the reviews are accurate and the sensor is junk

Installed this wideband over a month ago and still no issues. Wiring is easy. You MUST ground it to the chassis. If not, it will not work properly. Edit: My sensor failed like stated in other reviews. Just ordered a Bosch sensor. The gauge works fine so I'm still happy with the product.

Nice guage, and with the trim ring and lense being removable and interchangeable, it makes installing into the original guage cluster easy. The O2 sensor seems to be kind of cheap (as others have commented), so the readings jump around randomly at times which makes it a bit inaccurate. I will try replacing it with a better sensor.

Had trouble with my first unit, they sent a replacement a few days later after reaching out in an email. 5 stars for great customer service.

This controller worked great last summer, but is now dead. The screen is blank. I verified power and ground and tried disconnecting and reinstalling it after waiting a few minutes with no change. I see the seller offers a 24 month warranty, but even though I still have the manual, I can't find any contact info. I would definitely raise my rating if the seller sees this and honors the warranty. Update: The seller sent me a message wishing to honor the warranty with a replacement within 1 day of this post.

Worked for a few weeks. Now shows 14.8 and doesn't move. Checked all connections were good. Couldn't contact anyone. Going to get a new Bosch sensor like reviews mentioned

Excellent service, build quality looks excellent

Funciona perfectamente

This kit comes with everything you need and works great with accurate readings. Easy to install, looks good, and even customizable. Both the wires are more than long enough for any mounting location. I have been using this gauge for the whole summer in my Boosted car and it has held up great. Also it's way cheaper than the name brands and I can't see why you wouldn't go with this.

La herramienta perfecta para analizar la mezcla de aire combustible , ya aprobé dos verificaciones vehiculares con este medidor afr

Stopped working after a month. Now showing 14.6, at whatever RPM or boost, even when the car is off.