Nowadays, finding an air-fuel ratio gauge that is compatible with every street car or race car is quite difficult. But, here’s a product that has been specifically made for that purpose. Expecting to find the perfect gauge for your vehicle without enough knowledge can be quite far-fetched. For that reason, it’s good to choose a unit with Bosch sensors like the LSU 4.9 since they perform exceptionally well. Other products such as the Innovate LC1 and AEM AFR gauges also have a 0-5V output and could also be used. Hence, you should look for a tool that is built to last long. For instance, make sure its exterior is built with sturdy materials.

The 7 gauges come in 7 different colors, which makes it easier to differentiate them from one another.One disadvantage of the color-coded dials is that you might have a hard time viewing it in low light.

With that said, not all cars have air fuel ratio gauges but you can install one in your car if you want to monitor the AFR. Of course, there are benefits when it comes to monitoring your AFR: Unfortunately, it’s a little difficult to determine how well the gauge will work before installation. Most stand-alone narrow-band meters have 10 LEDs and some have more. Also common, narrow band meters in round housings with the standard mounting 2 + 1⁄ 16 and 2 + 5⁄ 8in) diameters, as other types of car 'gauges'. These usually have 10 or 20 LEDs. Analogue 'needle' style gauges are also available. Even better, you can transfer this output into most ECUs, data loggers, and laptops operating tuning software.

Final Verdict

The UEGO sensor gives the controller its speed and accuracy. The 4.9 LSU sensor used in the 30-4110 AEM Wideband UEGO AFR Controller Gauge has a faster light-off time and draws less current than the 4.2 LSU sensor used with AEM's 30-4100 Wideband UEGO Controller Gauge, which will be superseded to the 30-4110 gauge in August 2014. The 4.9 LSU sensor features the same fuel compatibility as the 4.2 LSU and NEVER requires free-air calibration when used with AEM's 30-4110 Wideband UEGO AFR Gauge. The 30-4110's 4.9 LSU sensor uses a different connector than the connector used with the 4.2 LSU sensors included with the original 30-4100 gauge controller. The sensors are not interchangeable between the two gauge controllers in any way, including changing connectors on the gauges. X-Digital wideband technology gives these controllers the ability to read and report values that other controllers do not, which can deliver more optimized engine tuning and a safer overall operating condition. The controller’s high-speed digital implementation ensures no loss of signal fidelity and full transient response, making it able to identify the slightest fluctuations in AFR and output them in full value. Why Response Time Matters The display includes a shift light, along with an OLED user configurable display, which is programmable by the user. Accurate AFR data is critical when tuning an engine. Running rich (very low air/fuel ratio, excessive fuel) can cause a loss in power, while running too lean (very high air/fuel ratio, not enough fuel) may result in serious engine damage. Using a wideband air/fuel controller during the tuning process allows you to monitor AFR and adjust tuning parameters to optimize them for maximum power and efficiency. AEM has a comprehensive line of highly accurate, reliable wideband air/fuel controllers that can help ensure your vehicle is optimally tuned. Can I Change The AEM UEGO Sensor’s Connector?