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

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.

Head unit (controller) dead after just a few months in service. Powers up, cycles & then goes fuel lean on the display & stays there. I did try a replacement O2 sensor first, as I've read those can fail. No change. I've bought 3 of this brand so far, with one failure. No way to contact the seller that I can see. EDIT - Changed the rating, the Seller was honorable & sent me a replacement unit after a few exchanges to confirm the failure.

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

After buying expensive wideband gauges, then finding these I figured it was worth a try. Since that first try I've bought 3 or 4 of them for different vehicles. Only had an issue with a sensor on one I purchased. Messaged the company and instead of just sending me a new sensor, they sent a whole new gauge kit within 2 days. Pretty solid product with great customer service.