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OBD-II data/parameter identifier groups to log for ECU tuning
1. general (rpm, speed, gear, time)
2. engine load (actual + target)
3. torque (actual + target)
4. accelerator pedal angle
5. throttle body angle
6. boost (actual + target)
7. wastegate duty cycle
8. fuel trims (short term)
9. fuel pressure (low + high)
10. ignition timing (all cylinders + average)
11. temperatures (oil, coolant, ambient, intake)
12. afr / lambda (actual + target)
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