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1) The directions stated the green LED should be blinking, but does it matter if it's blinking fast, slow, etc? So long as it's not solid, and not off?
2) What the heck are these instructions talking about that switch intended for Dodge/Chrysler vehicles?
The instructions read, "There is a new switch added that was placed directly between the 2 red test points. The switch is only needed for making EFIE work on 2.5 volt, narrow band sensors, such as are used on some Dodge/Chrysler engines. For these, the switch should be in the "off" position. For all other vehicles, the switch should be left in the "on" p[osition. You can also tell which setting is selected by measuring the upper red test port with your meter. If the voltage is between 0 and .45 volts, its set for normal engine. If it's between 2.5 and 3.5 volts, then it's set for the Dodge/Chrysler modification."
I am going to be no help here. I have very little experience with EFIE's because most of my research is to try and avoid the use of one. Some of the others here who have had a lot of experience with them should be able to help you out. I have used very simple ones on obdI systems to see what the difference is between my mods and an EFIE but am working on OBDII right now and will be getting a digital one soon to do further testing.