I am having issues with my Greddy Profec B Spec II, the EBC unit powers up, solenoid works, however, the EBC unit doesn't adjust voltage to the solenoid to govern its correct operation. Currently, the EBC unit supplies the solenoid with 12V, but once the desired boost level is reached, there is no change to the 12V to the solenoid to tell it to close.
Upon opening the EBC unit, I found that I am missing the Voltage Regulator (VR3, in the location circled below).
My EBC Unit with the missing VR3:
Another EBC Unit with the VR3:
Does anyone know the specs of the missing Voltage Regulator?
And, does anyone else have anymore insight into how the EBC Unit operates electronically to fix my issue?