I been searching for the best topics thread to put up this excellent EFI/Ignition conversion article:
I put this up so you all can see the rapid evolution over the course of 4 years they went through to get as simple, and durable, and stable of system as possible for their VW Westfalia adventure-camper vans as possible.
Saw the same evolution done by FORD/GM/Chrysler-Jeep over the course for 15-20 years.
I saw the Jeep I-6 4.0L (AMC 242/258) engines go from a distributor signaled points -> then Prestolite/Delco distributor mag-triggered ignition -> to former distributor/now cam shaft driven stubshaft sensor triggered -> to flex-plate/flywheel sensor triggered type.
Same for many Ford V-8 and V-6 systems.
This westie article will explain WHY these changes.
Their reference to using a OBDII-like controller interface means an externally flash re-programable self-diagnostic capable controller.
This article explains well that in their California area it could ONLY be a true recognized OBDII system IF they paid to have it expensively certified Lab tested and registered.
This All applies to Dodge evolution system changed too.
Read well. And believe me this one article is a hell’luv’a-lot easier than 25 years of tech having to live these change evolution painful “What?” “Why?” in-production learning-to-live-with one step at a time.