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Live tuning allows the real-time update of some tables in the ECU. This greatly speeds up the tuning process as minor changes take effect immediately, without waiting for a 90 second upload.
How Live Tuning works
Live tuning works by altering the ECU so that the ECU copies table information from flash memory (which cannot be changed without re-writing the whole ECU) to RAM (which can be changed quickly while the ECU is running). This copying process occurs every time the ECU RAM is cleared, which is every time the ECU is reset or the ignition is switched off and on. When tables are editing in FlashProManager, the changes are sent to the ECU where the RAM tables are updated, so that the ECU tables are updated in a fraction of a second.
Due to the method used, there are several limitations of live tuning:
Using live tuning
Live tuning is fairly simple:
There are two ways to select tables - either on a table by table basis from the Calibration and Table windows, or from the Select Live Tuning Tables menu..
Calibration Table Selection
Tables which allow Live Tuning show a Live Tuning icon next to them:
The Live Tuning icon shows the status of Live Tuning for that table:
Live Tuning not enabled for this table.
Live Tuning enabled, but pending a calibration upload.
Live Tuning active.
Menu Table Selection
Alternately, tables may be selected from a list available from the Online menu.
Buttons allow the quick selection of popular tuning options.
Resuming a Live Tuning session
When a calibration is saved it stores the status of Live Tuning tables. If the calibration is re-loaded, and the ECU matches the calibration, then Live Tuning may resume without the need to upload the calibration to the ECU again.