It is very important to talk with your engine tuner and conduct tests to answer this question more precisely. The ideal value depends on the engine and racing strategy, but keeping the mixture slightly rich is key to maximizing power and protecting the engine. Below is a guide with the most common ranges:

✅ Naturally Aspirated Engines:

0.88 - 0.92λ → Maximum power without compromising efficiency.

0.84 - 0.87λ → More thermal safety in high-demand engines.

✅ Gasoline Engines with Turbo and High Boost:

0.80 - 0.88λ → Maximum power.

0.75 - 0.79λ → Safe range (avoiding detonation and high temperatures).

✅ Methanol Engines with Turbo or Supercharged:

0.66 - 0.72λ → Balance between power and thermal safety.

0.61 - 0.65λ → Protection against detonation and additional cooling.

⚠️ Considerations for Gasoline Engines:

A lambda below 0.78λ can cause carbon build-up and loss of efficiency.

A lambda above 0.95λ can lead to detonation in high-performance engines."

Narrowband lambda sensors are narrow-range sensors that measure from 0 to 1 volt. They come in versions with 1, 2, 3, or 4 wires. Due to their narrow measurement range, the information they provide is limited. They are relatively accurate only around the ideal mixture (λ = 1 or AFR = 14.7), and outside of that range, they serve only as a rough reference. They are not recommended for fine-tuning carburetion adjustments, as they only offer basic information about whether the mixture is close to stoichiometric or not.

On the other hand, Wideband lambda sensors have a measurement range from 0 to 5 volts, allowing them to measure a broader range of air-fuel ratios. These sensors typically have 5 wires or 6 pins and are more modern and expensive. Unlike Narrowband sensors, Wideband sensors provide an accurate reading of the air-fuel ratio at all times, making them ideal for fine-tuning carburetion. Thanks to their greater precision and measurement range, they are the preferred option for high-performance engines or applications that require precise mixture control to maximize efficiency and prevent engine damage.

Yes, they are relatively easy to install, but it depends on the type of sensor and the vehicle's existing setup. Here are some general guidelines:

✅ Narrowband Indicator + Sensor:

This setup is easier because you can connect the sensor in parallel with the vehicle’s original wiring, meaning you don't have to disconnect or modify the original system. It's mainly a plug-and-play solution.

⚠️ Wideband Indicator + Sensor:

This setup requires a bit more work. You'll need to disconnect the original oxygen sensor and connect the Wideband sensor to the new indicator. It's crucial that you follow the installation instructions carefully to avoid damaging the system. The Wideband sensor often requires a dedicated connection and may need additional wiring for proper functioning.

In both cases, make sure to install the sensor in a location that allows for accurate readings, typically after the exhaust manifold or in a location recommended by the sensor manufacturer.

The installation is very simple, you can do it yourself! Here is the installation guide for Narrowband or Wideband, if you have any questions, just let us know.

Our mixture indicators are used to monitor the status of your mixture, but they are NOT actuators, meaning they do not affect the amount of fuel entering the engine

In this case, we have two options:

✅ Drill a hole in the exhaust pipe and weld a thread of the right size to install the sensor (available in Accessories). This option guarantees accurate measurements and adapts the exhaust pipe to use a lambda sensor.

✅ Install a bracket at the exhaust outlet (available in Accessories). This option is intended for situations where the exhaust pipe cannot be modified or for those who need to remove and reinstall the equipment on different vehicles multiple times.

The heating resistor must be connected to 12V so that the sensor quickly reaches its optimal operating temperature (~600°C). This ensures accurate readings from the start and prevents error codes in the ECU. It can be disconnected but with caution. If the exhaust maintains a high temperature (e.g., during high RPM driving), the sensor will continue to work without issues. However, at idle or on short trips, the temperature may drop, affecting the air-fuel mixture reading and causing potential measurement errors. For optimal performance, it is recommended to keep the heater connected at all times

The difference lies in the heating element and the number of ground wires. The recommendation we can give you is to opt for a 4-wire sensor, as they are also the most modern.