Adjusting Air-Fuel Ratios: Diablosport Trinity Guide

The Diablosport Trinity is a performance tuner and diagnostic tool for cars, which can be used to monitor the air-fuel ratio. This ratio is important for fuel economy and performance. To monitor the air-fuel ratio, a wideband O2 sensor is required. This can be connected to the Diablosport Trinity using an analog output cable.

Optimal air-fuel ratio for fuel economy

To achieve the optimal air-fuel ratio for fuel economy, you need to monitor your air-fuel ratio. To do this, you will need to purchase a wideband O2 sensor, which will allow you to view the air-fuel ratio and make adjustments as necessary. The optimal air-fuel ratio for fuel economy is 14.7, while the optimal ratio for performance is between 12.8 and 13.2.

There are a few different brands of wideband O2 sensors that you can choose from, such as the LC-1 from Innovate, or units from PLX and Zeitronix. You will also need to get a cable to connect the wideband's analog output to your Diablosport Trinity.

It is important to note that the Diablosport Trinity does not come with an analog cable, so you will need to purchase one separately or make your own. Additionally, you may need to install a controller, as the controller is what outputs the analog signal that the Diablosport Trinity can read.

By monitoring your air-fuel ratio and making adjustments as needed, you can optimise your fuel economy and performance.

Air-fuel ratio gauge suggestions

To change the air-fuel ratio on a Diablosport Trinity, you will need to purchase a wideband air-fuel ratio gauge. This is a device that measures the air-to-fuel ratio of your engine, ensuring it is not too rich or too lean, and preventing damage to your engine.

There are two types of air-fuel ratio gauges: narrow band and wideband. A wideband gauge is recommended as it gives you information from the internal combustion chamber, whereas a narrow band uses your car's factory oxygen sensor.

Innovate Motorsport

Innovate Motorsport offers a range of wideband air-fuel ratio gauges, including handheld and complete kit options. The handheld digital wideband air-fuel ratio meter and datalogger, for example, come in single or dual O2 options and in basic or ultimate shop kits. They also offer the MTX-L PLUS: Advanced Digital Wideband Air/Fuel Ratio Gauge Kit, with 3 ft or 8 ft sensor cable options.

AutoMeter

AutoMeter provides a wide selection of industry-leading air-fuel ratio gauges in both digital and analog styles. They offer narrow band and wideband options, with the latter suggested for Diablosport Trinity. Examples include the 2-1/16" Wideband Air/Fuel Ratio, Ultra-Lite II, and the 2-1/16" Wideband Air/Fuel Ratio, Analog, 8:1-18:1 AFR, Phantom II.

PLX and Zeitronix

Forum users have also recommended the PLX and Zeitronix units as nice options for wideband air-fuel ratio gauges.

When selecting a wideband air-fuel ratio gauge, ensure it has a 0-5V analog output so that it is compatible with the Diablosport Trinity. You may also need to purchase a separate cable to connect the wideband's analog output to the Trinity.

Air-fuel ratio monitoring

To monitor the air-fuel ratio on a Diablosport Trinity, you need to add a wideband O2 sensor. This will allow you to monitor and log your air-fuel ratio. The Diablosport Trinity T2 can monitor factory widebands, but for earlier vehicles without widebands, you will need to purchase a wideband O2 sensor and connect it to the T2 using the EAS system.

The optimal air-fuel ratio for fuel economy is 14.7, and for performance, it is between 12.8 and 13.2. You can adjust your air-fuel ratio by changing the injector slope and PE parameters. However, running your vehicle too lean or too rich can decrease the life expectancy of your engine.

There are several brands of wideband O2 sensors that are compatible with the Diablosport Trinity, including PLX, Zeitronix, and LC-1. These units have analog outputs that can be connected to the Trinity. You may also need to purchase a separate cable to connect the wideband to the Trinity.

It's important to note that the Diablosport Trinity may not be able to monitor the air-fuel ratio for all vehicles. For example, the 2019 Dodge Charger Scat Pack does not report the air-fuel ratio, so a wideband O2 sensor is necessary to see the air-fuel ratio on the T2.

Air-fuel ratio accuracy

To monitor the air-fuel ratio accurately, you need to add a wideband O2 sensor. The optimal air-fuel ratio for fuel economy is 14.7, and for performance, it is between 12.8 and 13.2.

You can't just get a wideband sensor; you need a controller as well. The controller outputs the analogue signal that the Diablosport Trinity can read. The PLX, Zeitronix, and LC-1 are units that have analogue output.

The AFR parameter on the tool is the "commanded" AFR, which is what the ECM is commanding. To know the real AFR, you need to install a wideband O2 sensor. The Diablosport Trinity T1000 can record or "log info" from the RCA jack.

The Diablosport Trinity's AFR gauge can be accurate, but it is the "commanded" AFR, not the actual AFR. If you are running a N/A vehicle, that AFR value is usually pretty close to the actual AFR.

Air-fuel ratio display gauge

An air-fuel ratio gauge, also known as an AFR gauge, is a valuable tool for monitoring your vehicle's air-fuel ratio. This is essential for optimising performance and fuel efficiency.

How to Install an Air-Fuel Ratio Display Gauge

• Install an AFR gauge in your vehicle's interior. This gauge will provide real-time feedback on your engine's air-fuel mixture.
• Understand the display. A typical AFR gauge has a numeric readout that displays the current air-fuel ratio. The optimal AFR varies depending on your engine and desired performance. For gasoline engines, a ratio of around 14.7:1 is considered stoichiometric (ideal for combustion).
• Monitor and adjust. While driving, keep an eye on the AFR gauge. If the reading deviates significantly from the desired ratio, you may need to adjust your engine's fuel delivery or other parameters to achieve optimal performance.

Diablosport Trinity does not offer a wideband O2 gauge. However, it will work with any popular wideband with a 0-5V analog output. You will need to get a cable to hook up the wideband's analog output that connects to the Diablosport Trinity on the other end.

Some recommended brands include:

• PLX
• Zeitronix
• LC-1
• GlowShift
• AutoMeter

Frequently asked questions