AEM 30-4110 Digital Wideband UEGO AFR Gauge, Black

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But what you also need to know regarding combustible engines is that gas isn’t the only part of the equation that’s important. That’s because combustible engines also use other ingredients to work so that they can function. This is where air and a spark come in as the engine needs to mix the gas with air and use a spark for the combustion to happen. Essentially, combustion is what allows the engine to work. Any Air-to-Fuel Ratio less than 14.7:1 is considered an AFR-rich mixture. On the contrary, any mixture that is greater than this AFR number is lean. #4. Is it better to run lean or rich AFR?? 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

Two factors determine whether or not the tool is compatible with the vehicle – the electrical system and the fuel type. Finding the best Air Fuel Ratio gauge can be a lot harder than you would expect. Especially if you don’t know the exact aspects you should be looking for when buying one. Moreover, this unit has display buttons that allow you to set various AFR values based on the fuel type. On the same note, these buttons allow you to change the oxygen level, Lambda values, and AFR values.

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Along with both of these facilities, this tool comes with other benefits, which will only amaze you more and more over time. The solution to this problem is getting a wideband gauge, however, still, make sure the voltage offered from the vehicle is within the range of the gauge.

The size of the gauge is ideal because it allows the tool to be fitted into most vehicles quite easily. Therefore, you won’t have to worry about whether or not the gauge will be suitable for your street or race car. AEM’s Wideband UEGO (Universal Exhaust Gas Oxygen, pronounced “You-Way-Go”) Controllers are powerful, cost-effective tuning tools that allow users to accurately monitor the Air/Fuel Ratio (AFR) of their engine. Why Use a Wideband Air/Fuel Controller?

Installing and Importing the Wideband Sensor into the ECU

If the scanner PID displays a "lambda" or " equivalence ratio," the reading should be 1.0 under stoichiometric conditions. Numbers above 1.0 indicate a lean condition while numbers below 1.0 indicate rich mixtures. The ECM uses the information from the sensors to adjust the amount of fuel being injected into the engine, so corresponding changes in the short-term fuel trim (STFT) PID(s) should also be seen. Lean mixture readings from the AFR sensor will prompt the ECM to add fuel, which will manifest itself as a positive (or more positive) short-term fuel trim percentage. For instance, the electrical system running through some engines can only handle 12V. While other systems can handle as high as 20V.