We will post up a more detailed tuning guide later, but here is a rough overview of what is in the software now. We are hoping to simplify this in later versions of the software, so that the average user will have less things to configure, while still offering power users access to all the options.
Here is a quick rundown of the options currently in the software:
- Boost Setpoints - Set your boost targets here for each gear. There are also more advanced options for boost by gear and RPM.
- Overboost (PSI) - Set this to your maximum desired pressure. If the boost reaches this limit, it will be instantly shutdown, until you release the gas.
- PID Limits (%) - This is the range over which you allow the feedback to adjust the output duty cycle. Larger values give the feedback more freedom to correct for boost falloff to redline or help with initial spool-up. Smaller values can help reduce overshoot.
- Learning Range (PSI) - When the boost within this distance of the target pressure, the integral control and learning are enabled. A larger range allows the controller to adjust the calibration table for larger errors. A smaller range leads to greater stability.
- Kp - Proportional gain. Higher values are higher gain, which offer faster response, but more overshoot and potential instability.
- Ki - Integral gain. Lower values are higher gain. Lower values correct for errors in the boost quicker, but at the expense of stability.
The second screenshot shows the calibration table. This table will be adjusted as needed by the learning algorithm, so you may not need to ever look at this table or adjust it. If you do, it is there for you.
