AEM 30-4110 Digital Wideband UEGO AFR Gauge, Black

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!

The media could not be loaded. Doesn’t work I’m pissed of

This is amazing

Great was as expected works very well easy to fit

I was in the 20% of the unlucky to receive the 1st order with the wrong sensor (obviously not working) which didn't mention even it's brand on the connector. The replacement had a completely different sensor (shape, color, size) which was clearly stating on the connector "Bosch LSU 4.9". It's working OK for now.

Didn't work on classic car. These gauges seem better for modern cars connect to Engine Management Computer. Amazon were very good refunding.