MSefi.com read only forum (Jan.15,2018)

trakkies wrote:IDM signal - 12 pin. But this may or may not work depending on your tachometer.

<This, I have my EDIS IDM output connected to a tacho signal generator unit driving my standard (old school) tacho

floppy wrote:Absolutely worth the money!!

Exactly, worth every penny

Only one way to find out each of those Bosch coils fire 2 plugs and are 2 pin on the LT side I doubt you will harm the EDIS unit but not sure about the coils as the dwell time may be off spec

Not seen that one driving the tacho correctly certainly can throw up a few problems

Was it something like this

Just a suggestion but it may be worth checking/resetting the air gap between the VR sensor and Trigger wheel just a thought and easy to check.