Includes Bosch 4.2 sensor for optimum accuracy and reliability.No laptop or dedicated display required for monitoring.Ideal AFR monitoring tool for EFI and carbureted applications, and engine dynamometers.Regardless, some people prefer the belt and suspenders approach, so a new product from AEM Electronics gives you the choice to monitor AFR, or AFR and EGT at the same time.ĪEM X-WiFi: Wireless Real-Time Engine Data Monitoring PN # 30-2320 The availability of wideband oxygen sensors, however, has pretty much made EGT-based tuning less critical for a typical street/strip car, but it can still be helpful for monitoring the engine on a cylinder by cylinder basis. Handling this kind of tuning on a dyno will give you a good idea of how much more fuel to use.
Ideally, you’d monitor the temperature output from the leanest cylinder, find the highest EGT and dial in the appropriate amount of fuel. So, how hot should your EGT be? Well, that depends on way too many factors to make any kind of general statement. Now, under wide open throttle those ratios can change from around 13:1 for naturally aspirated combinations to 11.5:1 for forced induction. This is the ideal ratio that it takes to cleanly burn all the fuel and air in the combustion chamber, resulting in the cleanest emissions and best gas mileage. Typically air/fuel ratios will hover around the 14.7:1 AFR mark under cruising and idling.
The X-WIFI is supplied with a Bosch oxygen sensor, exhaust bung, sensor cable, control module, data cable and wiring supplies. The AEM X-WIFI wirelessly streaming air/fuel and EGT data directly from our iPhone, though the X-WIFI will work with any phone that can connect to a network with internet capability.
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