Air/Fuel Ratio Gauge Kit with LSU 4.9 Sensor and Controller Box Wideband UEGO 30-0300 X Ultra-Thin Round Digital AFR O2 Oxygen Sensor Controller Universal Gauge

Really fit the need , durable, easy to read, quality product, functional for my needs.

The box states it works for methanol, but instructions do not show any provisions for changing the controller to read methanol afr, or switching the gauge to display lamda.

Much less expensive then other name brand models.It's only downside is having to hide it's sensor box. Most high dollar units are all built into the guage. Which i have used on my other cars. I tried this one on a cheaper car of mine to see how it does. It works, and is quite a bit less expensive as I mentioned, but I prefer the cleanliness of the more expensive units.

Works amazing only downfall is the control box don’t click in so can’t pull on it make sure it’s in a decent spot or your connection may come out. Not bad for its price compared to other AFR gauges. Its accuracy of reading fuel and air the instructions are also nice makes sense to even the most incompetent lol and the quality of the plastic isn’t bad but could be better but also is a budget friendly gauge.

Works it’s just off not accurate at all

The item works great and was installed with no hassle, the guage lean-rich indicator sadly is only red besides that it's a great product.

Numbers are constantly changing from 10-19 at idle (750 rpm) even after engine has wormed up for 20min. I suspect bad wide band sensor. Useless.

Pleased with my purchase