Idle Speed
The target idle speed is determined from two tables indexed by coolant temperature. Immediately after starting the engine, an increased idle speed is used ('Idle speed (after start)'). Approximately 20-60 seconds after engine start, the idle speed is reduced to the normal idle speed.
With larger injectors a higher quality idle may be obtained by increasing the idle speed slightly. To do this change the tables so that no values are less than your desired idle speed.