Load/RPM: The table is structured with Load on the vertical axis and RPM on the horizontal axis. Each cell represents a specific operating condition.
Values: Each cell contains a numerical value which in this case represents the Lambda/AFR (Air-Fuel Ratio) target. Here, values range from 12.61 at lower load/RPM to 14.70 at higher load/RPM.
Definition: A Lambda/AFR target table is used to define the desired air-fuel mixture for the engine across different operating conditions. Lambda is a measure of the air-fuel ratio relative to stoichiometric (14.7:1 for gasoline), where 1.0 represents a stoichiometric mixture. An AFR target below 14.7 (e.g., 12.61) indicates a richer mixture, while above (e.g., 14.70) indicates a leaner mixture.
The values on this table can be either Lambda values or AFR values, the type of unit to be used you can choose on the Wideband settings menu.
Purpose: This table helps in optimizing combustion efficiency, engine performance, fuel economy, and emissions by specifying the ideal fuel mixture for each load and RPM combination.
Whatever you set on this table is your Target AFR/Lambda for a given RPM/LOAD
Load/Store: Buttons to load settings from memory or store current settings, facilitating the saving and retrieval of tuning configurations.
Import Table: Allows importing pre-configured Lambda/AFR target tables, useful for starting with a baseline or transferring settings between similar engines.
Auto Cursor: When checked, it might automatically move the cursor or highlight within the table based on current engine conditions, aiding in real-time tuning.
Incorporate in fuel math: Option to include these Lambda/AFR targets in the fuel calculation algorithm, with this option sellected even if you don't have close-loop fuelling activated this values would be incorporated on the pulsewidth calculation/equation and changing this values will affect the fuel delivery, the idea is that if your VE table is accurately tuned, you can simply change the AFR target table to change your AFR without the need of changing the VE every time.
Selection: Likely used for selecting specific cells or areas within the table for adjustments or viewing.
% Correction: Provides quick adjustment options for the selected value in the table:
-5%
-1%
1%
5%
Custom: Allows for a custom percentage adjustment, with a current setting of 0%.
Primary Table: Allows to sellect between Primary and Secondary AFR/Lambda tables
Change Table Axis Values: Modify these if the default range does not cover your engine's operational envelope, ensuring you have fine control over the areas where tuning is critical.
Import Table: Import settings from other sources or previous configurations to start with a known good baseline for Lambda/AFR targets.
Auto Cursor: Useful for real-time tuning where the ECU might highlight or focus on the current operating point, showing where the engine is running in relation to the Lambda/AFR targets.
Incorporate in fuel math: Ensure this is checked if you want these Lambda/AFR values to influence the fuel calculation, providing a more integrated approach to tuning fuel delivery.
This is just a target table, if your VE table is not calibrated correctly changing this values will not necessarely change the running afr accurately, as the ECU will not be able to follow.
Start with a broad map and refine by focusing on areas where the engine spends most of its time or where performance issues are noted regarding Lambda/AFR.
Use % Correction for small, incremental changes to Lambda/AFR targets, especially when fine-tuning. Always log data before and after adjustments to track changes in combustion efficiency and engine behavior.
When importing tables, ensure they match your engine's characteristics or adjust the Lambda/AFR targets accordingly.
If using 'Auto Cursor', monitor how the ECU interacts with the table during operation to understand real-world tuning needs for Lambda/AFR.
Remember that tuning Lambda/AFR involves balancing performance, efficiency, emissions, and engine longevity. Always test changes in a controlled environment.