'''2026-05-16: VEMS project cancelled for now. My unit is defective, and i've moved on to a different ECU for this car. I May circle back and get this fixed for a later build, as the product and support is good. :-)
2026-04-24
Introduction:
I have a '72 1300 GT Junior, and mounted a 2000 GTV race engine with 45 Dellortos. Now i'm in the process of installing FAJS ITBs and the following equipment:
Trigger: VR primary using standard 60-2 wheel from Alfa 75 TS and a custom sensor mount:
HALL Secondary trigger using the distriutor (welded the centrifugal advance shut):
Other sensors are: TPS, IAT, CLT, Map (VEMS module), and one knock sensor:
The VEMS 3.3 was ordered (by a friend of mine, who didn't use it) like this:
Ignition is a standard Bosch ignition module running a motorcraft coil (wasted spark).
This is my wiring list (note the multiple sheets for compartments).
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With everything connected, I verified that all sensors except primary trigger was functional.
Problem 1 (VR Trigger): SOLVED (solved by "lifting" p259 VCC and soldering it back and now works?)
Problem 2 (Relay outputs): Workaround (re-wired to other channels)
Problem 3 (ignition outputs?): SOLVED
Initial Startup - Setting up with 3-4-2-1 Firing order