ECU Master TUNER3 - Additional Injectors

Power Out #1 (20)
Power GND (19)
DET 3
Inject ors
+12V
DIGITAL ECU TUNER 3 – User Manual
Controlling additional injectors
The device can control up to 4 high-Z injectors per 1 power output. Using PWM map, it is possible to control the
opening time of the extra injectors, and as a result, enriching the fuel mixture. A typical connection of the additional
injectors is as follows:
The PWM frequency should be set in range of 30 – 40 Hz. Using the PWM#1 map, it is possible to control output
DC (extra fuel dose) from 0% – 100%. A typical example of this usage is a N/A car with a turbocharger. When the
boost increases, the DC of additional injectors also increase rising the fuel doses. Due to the additional fuel, the
proper AFR can be archived.
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