Once the LED'S are turned off, this shows that the boost control management is OFF making the boost pressure only rise to the factory setting controlled by the factory actuator operation.
Drive the vehicle with the power OFF. At this point, attempt to drive in the gear with the highest load and check the peak boost level.
Normal actuators may range from ~ 0.4-0.8 kg/cm2. The higher the boost level, the lower the duty cycle that is needed to reach the same boost level. As for the actual duty setting, the fundamental rule is if the boost setting is set for 1.00 kg/cm2 and the actuator pressure is 0.4 kg/cm2 the limit is 70% while a 0.8kg/cm2 actuator pressure would denote a 40% limit. Of course if the boost pressure is higher than this the duty limits would be lower and if the boost pressure lower, the duty limit higher.
Using the actual driving data as a base, set the duty setting corresponding to the actual boost pressure.
Press the SELECT switch once again for longer than 3 seconds and turn the power back ON.
Select one of the boost settings A or B.
Press the MODE button for longer than 3 seconds.
If the set boost level is A, then the initial setting will flash 30% (B will flash 50%)