(30-4110) UEGO Air/Fuel Ratio Gauge

Entirely outstanding in terms of price and performance. This much value for 150 dollars is amazing compared to what you got for your money 15-20 years ago. Back then you paid more and didn't even get a gauge let alone a good one with an easy install. The gauge is easy to read, responds quickly and looks pretty. It doesn't flicker or anything so I don't know why people complain about distracting flashing lights. The brightness seems just right for every situation so far and you don't notice it unless you glance over to the windshield pillar- maybe it's annoying with gauge cluster mounting or with internal LED lighting or something. Dunno. Everyone's car is different. But I had no problems in my NA miata, even in bright sunlight with the top down. Installation was straightforward and easy except for the firewall routing. If you have an easy passage through your firewall and 12v/GRND/signal wires already set aside, this is under a 5 minute install. I had the thing up and running in about 2 minutes... then 2 hours later I had it installed in my dashboard. The extra two hours was entirely devoted to firewall/dashboard cable routing. Getting the rectangular cable connectors fed through the firewall was annoying but that's the worst of it. With practice I could probably get it down to 15-20 minutes. The gauge feels a bit fliimsy compared to autometer (which feel like they're made from metal or something), but you won't ever touch it once installed, so this is a minor quibble.

Before I bought this gauge, I tried to save some money by purchasing a cheap eBay APSX wideband. That was a mistake, the wiring was cheap, the connector was junk, it didn't work right off the start, and was broken after a week. This gauge is phenomenal. The wiring is all thicker gauge (I think 18?) which was bigger than the cheap one I got. The sweeping LEDs work great and look very smooth while driving. The LED numbers are very easy to read and show up nicely under any lighting conditions. The ONLY complaint I have is that when you are off the throttle and the A/F ratio is 19 or so, it just reads "--" and I wish it would say 19. It's not an issue of any kind and it doesn't do it any other time than when you see coasting off the throttle. Overall this is a great gauge and I would absolutely reccomenend spending the extra 30$ to but this instead of the cheap eBay one.

It works and it preforms very well, it's very responsive to sudden changes. A lot of the instillation and preformance depends on the vehicle but the power wiring pigtail could be another foot longer and the sensor lead itself is plenty long for my installation. You will need to know basic wiring and have a second bung welded into your exhaust in the correct spot. The "P4" setting is terrible, do not buy it for this purpose. It's not emulated well at all actually just makes my miata (1994 1.8L) run deathly lean, almost like the stock ecu isn't reading the signal correctly (wiring was verified through factory wiring diagrams). I ended up buying a new narrowband and welding in the provided bung after already cutting into the wiring. The setting switch is deeply recessed into the device and the retention tab actually blocks access to it. The two wiring pigtail connections and placed too close and the cutout for them is not big enough, they both just barely fit in and you have to wiggle with it a little to even get both to get into place. It works as it is but it's not ideal. After a few months and one return/replacement later because of a faulty bosch sensor and some weird troubleshooting, it's had no issues since and I've placed about 2500 miles on it with quick readings, and no sun glare even with the top down and shining on it. Update 12/10: I have since moved to standalone and don’t need the narrowband emulation feature anymore. Unfortunately after 4000 miles the sensor again has died and reads full lean, it also fails the brake clean test miserably with no response even when soaked. Will be contacting seller for a potential replacement sensor.

Looks like it is built pretty decent, though the case is a very cheap plastic and would of preferred metal but seems everything is plastic nowadays. I installed it and the sensor screwed right into my existing bung. The threads are precoated with I think is anti-seize. The sensor cable is plenty long enough for my application and I probably will end up with a glove box full of rolled up cable. Once I get it running, I will try to update my review here. UPDATE: After installing the gauge and sensor, I am impressed with the product. It worked and works very well. It does have quite the light show when you first start the car as it boots itself up. The gauge does not start working until the sensor has completely warmed up which is a very short time. I really like the duel display mode with the digital display and the sweeping dial display. This item could be used for a tool if you own more then one vehicle. The only requirement would be to have holes drilled in exhaust pipe with the correct size bung in each for install and removal during test.

Have used one of these before in a kit car and needed another one for a project bike I am working on, so wasn't a problem to choose this having used one previously with no issue. The gauge comes with different faces so get a choice of a black or white face and bezel which is a nice touch to fit in with your dash/clocks. The wiring is fairly easy for the basic operation - there are serial connections if you need that sort of thing but I just use it on the dash for live monitoring as I'm running the engine. Just a live and neutral connection will have you up and running (preferably a fused live from the battery via an ignition switched relay is ideal). If you don't already have an O2 fitting on the exhaust, the kit comes with the appropriate collar, so all you have to do is drill an appropriate hole (angled downwards so the sensor is not likely to be in contact with condensation as the exhaust cools after running) and fit the collar over the hole. This is preferably welded on, however I don't have easy access to a welder, but I do have a blowtorch and brazing rods and thought I'd give it a go. I was surprised to find that simply brazing the collar on worked absolutely fine and hasn't had any issues. The heat at the point the sensor is fitted isn't high enough to cause a problem to the braze and so as long as it's a nice sealed, solid bead all the way around it should be fine if you don't have access to welding or someone who welds. Lucky my latest bike project already has the stock O2 sensor for the ECU, so I've removed this and it's a straight swap for this item. A resistor in the ECU connector fools the bike into thinking there's an AFR reading and then I use a Power Commander to override the fuel mapping. Once fitted, fire up the bike and then AFR gauge lights up and show the current fuel / air mix. You can then tune the engine to run in the correct mixture and see what is happening in real time, even while driving. Overall, this has really helped with tuning the engine and haven't had any issues with the gauge or fitting.

funciona correctamente, es mas rapida que versiones anteriores, trae todo lo necesario para montarla y marca mas rápido que aem mas antiguas

残念ながらA/Fが正常に表示されませんでした。

Se instala fscil, no necesita calibracion, solo en aprox 2 mese dejaron de funcionar los focos, pero amaxon me lo cambio.

La sonda lambda non funziona, ho dovuto acquistarne un’altra che fosse compatibile con lo strumento. Nell’inserzione c’è scritto non accettano resi per il malfunzionamento della sonda… la mia non andava proprio. Sostituta la sonda a spese mie, lo strumento ha iniziato a funzionare. AGGIORNAMENTO Ho contattato il venditore che ha provveduto a spedirmi un’altra sonda senza reso e oltre i tempi di restituzione. Ottimo venditore, serio, ho modificato portando la Recensione a 5 stelle!!! Grazie mille.