[45% OFF] AEM 30-4110 UEGO Air/Fuel Ratio Gauge (As of 09/01/2021)


09/01/2021 07:30 EST

SKU: B00N3VGPYS Category:


Interchangeable black and white faceplates included for customizing gauge appearance

Bosch 4.9 LSU wideband sensor and weld-in bung included PN 30-4110

Interchangeable black and silver bezels included. 52mm (2-1/16”) gauge housing

0-5V analog output 10-20 AFR range only

No free air sensor calibration required ever. A 2-1/16 inch gauge housing ensures that it will fit in most gauge pods and can be remotely mounted virtually anywhere

AEM 30-4110 UEGO Air/Fuel Ratio Gauge Reviews

So I got it installed, it ran but it kept going full lean when I knew my tune was super rich, then eventually I sent the gauge in and finished up some other things with the car, re wired my power and ground still kept slowly creeping to full lean so that’s when I sent the gauge in to AEM themselves, they were very quick with responding and they over night shipped the gauge back. The gauge has a year warranty through the AEM so they replaced it, then I start the car again after I reinstalled the gauge and this time it’s reading full lean and nothing else, and since I had the exhaust all apart I checked for a leak and I had one, so got that all buttoned up and the same thing was happening, tested the sensor again and it was dead, so I went to oreillys and got a Bosch 17212 wideband and it’s working flawlessly now. Throw the stock sensor away and just get a replacement, it will save you sooo much time. Other than that I’m super excited to get back to tuning my car. 5/5 stars except for the bad sensor

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.

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.

Although not fitted yet, have to commend the supplier for their speedy delivery. Product appears to be fine but will not know 100% until fitted. However, I was charged almost £40.00 import duty which wasn’t clear when I ordered so consider buying from a UK based company to avoid charges!

This is amazing